Sounds like your DroidScript app is using Scoped Storage because you have done a fresh install of a recent version of DroidScript
In main storage your DroidScript folder should be at:
Android/data/com.smartphoneremote.androidscriptfree/files/DroidScript/Plugins
If you are using Android 10 or less you should be able to access that folder directly from your file manager
In Android 11+ I use a small app running in DroidScript to place them directly into "/Storage/DroidScript/Plugins" which chooses the correct path regardless of Storage type