Hello and thank you for using Apple Discussions.
First, please check if it is turned on:
Turn on App Privacy Report:
- In Settings, tap Privacy.
- Scroll to and tap App Privacy Report.
- Tap Turn on App Privacy Report.
App Privacy Report starts gathering information only after you turn it on, so it may take a little time for details to appear. You’ll see more info as you continue using apps on your device. The data in your App Privacy Report is encrypted and stored only on your device.
You can turn off App Privacy Report at any time in Settings > Privacy > App Privacy Report. Doing so will also clear the report data from your device.
(Taken from About App Privacy Report - Apple Support)
Thanks,
Maverick.