Photoshop scripting documentation

Hello @Stephen Marsh , thank you for your reply.

Scripting Listener dowsnt work on Apple MacBookPro 13-inch, M2, 2022.
I was able to write the script with help from the documentation above. 

var doc = app.activeDocument;

var selectedLayers = getSelectedLayers();

if (selectedLayers.length == 2) {
    
    var result = idLayers(selectedLayers);

    var object = result.object
    var scale = result.scale

    var layersToDistribute = [object, scale];
    h0Vcenter(object)
    h0Vcenter(scale)
    distributeRow(object, scale);
} else {
    alert("Please select 2 players");
}
function h0Vcenter(layer) {
    var currentX = layer.bounds[0].value;
    var currentY = layer.bounds[1].value;
    var deltaX = -currentX;

    var centerY = doc.height.value / 2;
    var layerHeight = layer.bounds[3].value - layer.bounds[1].value;
    var targetY = centerY - layerHeight / 2;
    var deltaY = targetY - currentY;

    layer.translate(deltaX, deltaY);
}
function idLayers(layers) {
    var objectLayer = layers[0];
    var scaleLayer = layers[1];
    var objectWidth = objectLayer.bounds[2].value - objectLayer.bounds[0].value;
    var objectHeight = objectLayer.bounds[3].value - objectLayer.bounds[1].value;
    var scaleWidth = scaleLayer.bounds[2].value - scaleLayer.bounds[0].value;
    var scaleHeight = scaleLayer.bounds[3].value - scaleLayer.bounds[1].value;

    if (objectWidth * objectHeight < scaleWidth * scaleHeight) {
        var tempLayer = objectLayer;
        objectLayer = scaleLayer;
        scaleLayer = tempLayer;
    }

    return { object: objectLayer, scale: scaleLayer };
}
function getSelectedLayers() {
    var ActLay = app.activeDocument.activeLayer;
    ActLay.allLocked = true;
    var L = app.activeDocument.layers.length;
    var selLayers = new Array();
    for(var i = 0; i < L; i++) {
        var LayerType = app.activeDocument.layers[i].typename;
        var layerRef = app.activeDocument.layers[i];
        if (LayerType == "LayerSet" ) {
            var refLength = layerRef.layers.length;
            for(var j = 0; j < refLength; j++) {
                var refLay = layerRef.layers[j];
                if (refLay.allLocked == true){selLayers.push(refLay)}
            }
            continue;
        }
        if (layerRef.allLocked == true) {selLayers.push(layerRef)}
    }
    ActLay.allLocked = false;
    return selLayers;
}
function distributeRow(layer2, layer1) {
   
    var layer1Left = layer1.bounds[0].value;
    var layer1Right = layer1.bounds[2].value;
    var layer2Left = layer2.bounds[0].value;
    var layer2Right = layer2.bounds[2].value;

    var totalWidth = (layer1Right - layer1Left) + (layer2Right - layer2Left);
    var remainingWidth = doc.width.value - totalWidth;
    var spaceBetween = Math.round(remainingWidth / 3);

    var layer1Delta = spaceBetween - layer1Left;
    var layer2Delta = (spaceBetween * 2) + (layer1Right - layer1Left) - layer2Left;

    layer1.translate(layer1Delta, 0);
    layer2.translate(layer2Delta, 0);   
}

 so is UXP the new way of writing scripts or what?