Photoshop script - make text character go superscript

I just adapted an older Script to recolor letters to superscript the second and third letter of the selected Type Layer. 

Maybe it can provide a starting point for you. 

// apply colors from array to letters of selected type layer;
// add superscript;
// 2020, use it at your own risk;
if (app.documents.length > 0) {
//////////////////
try {
var theFonts = new Array;
var theStyleRanges = new Array;
// get font of active layer;
var ref = new ActionReference();
ref.putEnumerated( charIDToTypeID("Lyr "), charIDToTypeID("Ordn"), charIDToTypeID("Trgt") ); 
var layerDesc = executeActionGet(ref);
var layerSet = typeIDToStringID(layerDesc.getEnumerationValue(stringIDToTypeID("layerSection")));
var isBackground = layerDesc.getBoolean(stringIDToTypeID("background"));
var theName = layerDesc.getString(stringIDToTypeID('name'));
// if not layer group collect values;
if (layerSet != "layerSectionEnd" && layerSet != "layerSectionStart" && isBackground != true) {
var hasText = layerDesc.hasKey(stringIDToTypeID("textKey"));
if (hasText == true) {
var textDesc = layerDesc.getObjectValue(stringIDToTypeID('textKey'));
var theText = textDesc.getString(stringIDToTypeID('textKey'));
//var shapeList = textDesc.getList(stringIDToTypeID('textShape'));
var paragraphRangeList = textDesc.getList(stringIDToTypeID('paragraphStyleRange'));
var kernRange = textDesc.getList(stringIDToTypeID('kerningRange'));
var rangeList = textDesc.getList(stringIDToTypeID('textStyleRange'));
// process the list;
for (var o = 0; o < rangeList.count; o++) {
var thisList = rangeList.getObjectValue(o);
var theFrom = thisList.getInteger(stringIDToTypeID('from'));
var theTo = thisList.getInteger(stringIDToTypeID('to'));
var styleDesc = thisList.getObjectValue(stringIDToTypeID('textStyle'));
//checkDesc2 (styleDesc);
var aSize = styleDesc.getUnitDoubleValue(charIDToTypeID( "Sz  " ));
// check for default font;
if (styleDesc.hasKey(stringIDToTypeID('fontPostScriptName')) == true) {var aFont = styleDesc.getString(stringIDToTypeID('fontPostScriptName'))}
else {
	var theDefault = styleDesc.getObjectValue(stringIDToTypeID('baseParentStyle'));	
	var aFont = theDefault.getString(stringIDToTypeID('fontPostScriptName'));
	};
if (styleDesc.hasKey(stringIDToTypeID('impliedFontSize')) == true) {var aFont = styleDesc.getString(stringIDToTypeID('fontPostScriptName'))}
// add to array;
theFonts.push([aFont, aSize, theFrom, theTo]);
theStyleRanges.push(thisList.getObjectValue(stringIDToTypeID('textStyle')));
}
}
};
// the color array;
var theColors = [[255,0,0], [255,255,0], [0,255,0],[0,255,255], [0,0,255], [255,0,255]];
var anIndex = 0;
var theColorNumber = theColors.length;
// change text;
// =======================================================
var idPxl = charIDToTypeID( "#Pxl" );
var idTxtt = charIDToTypeID( "Txtt" );
var idFrom = charIDToTypeID( "From" );
var idT = charIDToTypeID( "T   " );
var idTxtS = charIDToTypeID( "TxtS" );
var idTxLr = charIDToTypeID( "TxLr" );
var idTxt = charIDToTypeID( "Txt " );
var idsetd = charIDToTypeID( "setd" );
var idBaseline = stringIDToTypeID( "baseline" );
    var desc6 = new ActionDescriptor();
    var idnull = charIDToTypeID( "null" );
        var ref1 = new ActionReference();
        ref1.putEnumerated( idTxLr, charIDToTypeID( "Ordn" ), charIDToTypeID( "Trgt"  ));
    desc6.putReference( idnull, ref1 );
        var desc7 = new ActionDescriptor();
        desc7.putString( idTxt, theText );
            var list2 = new ActionList();
//////////////////
// define each letter individually;
var theIndex = 0;
var theRef = theStyleRanges[theIndex];
var theRef2 = theFonts[theIndex];
for (var m = 0; m < theText.length; m++) {
// check for relevant style range;
		if (m == theRef2[3]) {
			theIndex++;
			var theRef = theStyleRanges[theIndex];
			var theRef2 = theFonts[theIndex];
			};
		var desc14 = new ActionDescriptor();
		desc14.putInteger( idFrom, m );
		desc14.putInteger( idT, m+1 );
		var theStyle = theRef;
		var desc21 = new ActionDescriptor();
		desc21.putDouble( charIDToTypeID( "Rd  " ), theColors[anIndex][0] );
		desc21.putDouble( charIDToTypeID( "Grn " ), theColors[anIndex][1]  );
		desc21.putDouble( charIDToTypeID( "Bl  " ), theColors[anIndex][2]  );
        theStyle.putObject( charIDToTypeID( "Clr " ), charIDToTypeID( "RGBC" ), desc21 );
// superscript;
        if (m == 1 || m == 2) {
            theStyle.putEnumerated( idBaseline, idBaseline, stringIDToTypeID( "superScript" ));
        }
        else {
            theStyle.putEnumerated( idBaseline, idBaseline, stringIDToTypeID( "normal" ));
        };
		desc14.putObject( stringIDToTypeID('textStyle'), stringIDToTypeID('textStyle'), theStyle);
		list2.putObject( charIDToTypeID( "Txtt" ),  desc14);
anIndex++;
if (theText[m].match(/\s/)!=null) {anIndex--};
if (anIndex == theColorNumber) {anIndex = 0};
		};
//////////////////
var list3 = new ActionList();
for (var n = 0; n < kernRange.count; n++) {
var thisOne = kernRange.getObjectValue(n);
$.writeln (n+"___"+thisOne.getInteger(charIDToTypeID("From"))+"___"+thisOne.getInteger(charIDToTypeID( "T   " ))+"___"+thisOne.getInteger(stringIDToTypeID("kerning")))
var desc15 = new ActionDescriptor();
desc15.putInteger( idFrom, thisOne.getInteger(charIDToTypeID("From")) );
desc15.putInteger( idT, thisOne.getInteger(charIDToTypeID( "T   " )) );
desc15.putInteger( charIDToTypeID( "Krng" ), thisOne.getInteger(stringIDToTypeID("kerning")));
list3.putObject( stringIDToTypeID( "kerningRange"),  desc15);
};
//////////////////
        desc7.putList( idTxtt, list2 );
        desc7.putList( stringIDToTypeID( "kerningRange"), list3);
    desc6.putObject( idT, idTxLr, desc7 );
executeAction( idsetd, desc6, DialogModes.NO );
}
catch (e) {};
};