Hi Scott,
You can put a PWA app in googles and Ms's App-store. For Apple, not so much, you need to wrap it up in a Cordova shell. What makes it a PWA, also makes this wrapping up easier.
If you really want/need this from the get-go, Ionic is probably the easiest way to get started.
(I just learned that it might be possible to put a PWA in the Apple store, but that might be just rumoured, as I couldn't find anything to back it up.)
Putting stuff in app-stores is a pain by itself.
This story is not unique. It was even (way) worse in the past.
Regards
Sander