how can i import music from flash drive to Catalina

Dreagoth,

Drag the MP3 files into your Automatically Add to Music folder, which is inside the Media folder. (Do this while Music is running.) If the file is compatible it will be added to your library. If it is not compatible, it will be placed in a Not Added folder.

Dreagoth,

If you don't see it in an obvious place within your Music folder, then search in Finder on the string "Automatically."