If you know the Apple ID and password, use iCloud Find My to erase the iPad
Go to iCloud.com/find on another device
Sign in with the Apple ID linked to the iPad
Select the iPad
Choose Erase iPad
If the iPad is disabled or you forgot the passcode, use Recovery Mode with a computer
Connect the iPad to a Mac or Windows PC
Open Finder on Mac or iTunes on Windows or older macOS
Put the iPad into Recovery Mode
For iPad with Face ID, press and quickly release Volume Up, press and quickly release Volume Down, then hold the Top button until the recovery screen appears
For iPad with Home button, hold the Home button and Top or Side button together until the recovery screen appears
When prompted on the computer, choose Restore
Wait for the restore process to finish
Set up the iPad again after it restarts
If Activation Lock appears, enter the Apple ID and password previously used on the iPad
If you cannot access the Apple ID, contact Apple Support with proof of purchase
If the iPad is supervised by a school or organization, contact the administrator for reset help