Hey there,
From what I can tell, the Quest version is marked as an android app, which is correct. The Itch app, to my knowledge, only deals with executables, so it can correctly detect and run your windows version because that’s to be executed.
I don’t think the Itch app can deal with android apps in anyway, so the only option for users is to download it manually from the web and install it on their system.
Hope that helps :)