In the Notes app > Apps > Notes.
Tap Notes Accounts, then tap Add Account.
Do one of the following:
Choose an account provider, then enter your account information.
If your account provider isn’t listed, tap Other, tap Add Mail Account, enter your email account information, then turn on Notes for that account.
Notes in this account appear only on your iPad, and they’re included in your iPad backups to iCloud.
Go to Settings Create and format notes on iPad