Now that I have created a Mac app from Xcode from iOS, how do I beta test it? Is there TestFlight for Mac? Where do I invite testers? What is the workflow for this?
To test it on your mac, just select 'My Mac' as the destination and build.
For testflight, do the same, but then create an archive - see https://developer.apple.com/documentation/xcode/distributing_your_app_for_beta_testing_and_releases?language=objc