create scripts for Photoshop

Check here as well

https://www.ps-scripts.com/

Helpful links I have collected...

ExtendScript Debugger for VSCode:
https://marketplace.visualstudio.com/items?itemName=Adobe.extendscript-debug

InDesign ExtendScript API
http://www.indesignjs.de/extendscriptAPI/indesign-latest/

Photoshop ExtendScript API
https://www.indesignjs.de/extendscriptAPI/photoshop-latest/

Illustrator Scripting Guide
https://ai-scripting.docsforadobe.dev/

JavaScript Tools Guide
https://extendscript.docsforadobe.dev/

ScriptUI for dummies
https://creativepro.com/files/kahrel/indesign/scriptui.html

(PDF) Adobe Creative Cloud JavaScript Tools Guide
https://download.macromedia.com/pub/developer/aftereffects/scripting/JavaScript-Tools-Guide-CC.pdf

(PDF) Illustrator CC Scripting Guide
https://www.adobe.com/content/dam/acom/en/devnet/illustrator/pdf/Illustrator_Scripting_Guide_cc.pdf

(PDF) Illustrator CC Scripting Reference JavaScript
http://wwwimages.adobe.com/content/dam/acom/en/devnet/illustrator/pdf/Illustrator_Scriptin_Reference_JavaScript_cc.pdf

(PDF) Illustrator Scripting Guide (2021)
https://readthedocs.org/projects/illustrator-scripting-guide/downloads/pdf/latest/

(PDF) Photoshop CC Scripting Guide (2013)
https://wwwimages2.adobe.com/content/dam/acom/en/devnet/photoshop/pdfs/photoshop-cc-scripting-guide.pdf

(PDF) Photoshop Scripting Reference (2020)
https://www.adobe.com/content/dam/acom/en/devnet/photoshop/pdfs/photoshop-javascript-ref-2020.pdf

Also, this year I began a video series about programming ExtendScript. Start here:

https://youtu.be/XjmWX_qfLSU

Have a look at these: https://creativepro.com/?s=scripts

I recommend that you focus on JavaScript as the platform-independent one. 

https://github.com/Adobe-CEP/CEP-Resources/tree/master/Documentation/Product%20specific%20Documentation/Photoshop%20Scripting

https://helpx.adobe.com/photoshop/using/scripting.html