I don’t know my passcode that i need for my update to be installed
How do i recover my passcode for my update to be installed?
iPad, iPadOS 14
Passcode or password?
Passcode - If you forgot the passcode for your iPad or your device is disabled.
If you forgot the Apple ID password, enter the Apple (iCloud) ID, and click Forgot Password. See if you can get a Rescue or Notification email option if necessary. Link to contact Apple Support at the end of the 2nd article.