Saving to adobe fonts folder not working on glyphs 3

trying to save for test on Catalina on a new i mac and i cant find that folder any more…
also tried the new - test install - but also not working on illustrator

Sometimes you need to create the Fonts-folder yourself.
https://www.glyphsapp.com/tutorials/testing-your-fonts-in-adobe-apps

Thanks!

and what is the new - test install - in Glyphs 3 ?

The test install will make it easier to test/use the font in all none Adobe apps. You might need to restart some of the apps but the font cache will not be a problem any more.