updating apple Id is stuck on my new phone how doI fix this

If the above doesn't work, Do you have access to another WiFi network where you can try? That has worked for several people.

Try a forced restart.

Reset Device. https://support.apple.com/en-us/HT201412

If necessary

Hard reset. https://www.wikihow.com/Hard-Reset-an-iPhone

Do a backup and try a factory reset. Then restore from your backup.

Restore to Factory setting. https://support.apple.com/en-us/HT201252

Backup - Restore your device from an iCloud or iTunes backup. https://support.apple.com/en-us/HT204184

I would recommend that you follow the steps listed in: Restart your iPhone - Apple Support