We don't have a Mac currently so we can't test is unfortunately. We'll look into that and let you know if we know something!
You can do Mac build from Windows. You just need to install this Unity part (Unity Hub -> somewhere in the settings -> install Mac export). Unity Mac builds work in the majority of cases even without testing so it should be fine. The only thing to know - don't remove the default settings window because Mac resolution is 2560x1600 and running in full resolution slows down the game.