Apple ID is grayed out.
I tried restarting my phone twice, and turning off and on restrictions with “allow account changes” and it didn’t work either.
i dont even wanna change my Apple ID I just wanted to view it, and this happens.
iPhone XR, iOS 13
Try a forced restart.
If necessary
If there are restrictions in Screen Time that are preventing access, you will need to restore the device to factory settings. Do not restore from a backup made when the Screen Time code was active.
If there aren't any Screen Time restrictions, do a backup and try a factory reset. Then restore from your backup.
Backup - Restore your device from an iCloud or iTunes backup.