in this video I've explained about If you forgot your notes password
Go to Settings ,Notes, then tap Password.
Select the Notes account that you want to change, then tap Reset Password.
Enter your Apple ID password, then tap OK.
Tap Reset Password again.
Enter your new password and password hint. Tap Done.
if you have still any problem please let me know on comments
thanks
#fixiPhonenotespasscode
#iphonepasscode