Need help editing (iPhone/Apple Music app)

[ohrenkino]

See this thread on iTunes rating:

Saving Itunes rating and counter

Yes, this tag can store play count and rating, but iTunes doesn't use it. The info from iTunes is only stored in its database. If you had a file with a popularimeter tag, it could be seen in the extended tag view that can be opened by pressing [Alt+T] or clicking the [:mt_tag:] button. If you still want to have this info in the tag, it could probably work because iTunes can export the database to csv.

If you want to do anything with MP3tag it would be much more interesting to see the data from the MP3tag extended tags dialogue (Alt-T) as that is the place where Mp3tag could do something for you.