yes and no
the difference between Windows and MacOS is one flag - but unfortunately that flag does not exist under Windows.
if you deploy to mac on a mac computer, you get an app - but under MacOS all apps are special folders that the OS only pretends to be programs.
if you deploy to mac on a windows computer, you get a folder - and that folder is exactly the same as the app under MacOS, just missing the flag that would tell the MacOS to handle that folder as an app.
The best way would be to simply borrow a MacOS computer for a day after you completed your game to handle that deployment.
The second best way would be to create a VM with MacOS on one of your computers - that is possible but might be difficult without the technical knowledge.
Theoretically you can also create the folder under windows, transfer it to MacOS and then use administrator tools on MacOS to turn that folder to an app, but unfortunately I don't know how to do that.