Automator - How to know what I can do with Automator in each app
Automator and AppleScript are two very different things.


For Automator actions for a specific app, search for the name of the app in the Actions search bar.


For AppleScript, open the Script Editor, then open the dictionary of the app by pressing ⇧⌘O and selecting the app. Apps not in the list probably don't have an AppleScript dictionary.