The App Store has lost app sensitivity labels, whether on iOS or macOS. It’s as if they had never existed: impossible to get your hands on them. This is definitely a bug and these files should be back soon, hopefully.
The “nutri-score” of apps appeared at the very end of 2020. When they do not disappear, these sheets provide information on the privacy practices of applications, in other words the nature and use of data from the user.
Update 6 p.m. — Aye, Apple’s System Status page, usually the last to know, confirms a problem on the App Store, but also for Apple Music. Users might experience issues for both of these services.