Script editor is in some state where it's impossible to compile or run an AppleScript.
The preferences page refuses to allow selecting a Default Language, which I guess is why it won't do anything else. The shortcuts for Compile and Run are greyed out in the menu items.
After jumping thru some security hoops it was possible to run a script with osascript but it's pretty hard to develop applescripts without script editor.
Issue present on OS 12.2.? and 12.3.1