Automatically generate text labels with name of shape

try this script, this version will name pathItems in a layer named "Layer 1" only

// label boxes
// https://community.adobe.com/t5/illustrator-discussions/automatically-generate-text-labels-with-name-of-shape/td-p/12987454

function main() {
    var idoc = app.activeDocument;
    var layer1 = idoc.layers["Layer 1"];
    
    var textLayer = idoc.layers.add();
    textLayer.name = "Text";
    
    var pItems = layer1.pathItems;
    var tframe, pItem;
    
    for (var a=0; a<pItems.length; a++) {
        pItem = pItems[a];
        
        tframe = textLayer.textFrames.add();
        tframe.contents = pItem.name || "Not Named";
        tframe.textRange.paragraphAttributes.justification = Justification.CENTER;
        
        tframe.position = [pItem.left + pItem.width/2 - tframe.width/2, pItem.top - pItem.height/2 + tframe.height/2]
    }
}

main();