Assuming that you meant “Note” - vice “Keynote” - your options are unfortunately limited as password-locked Notes are VERY SECURELY protected.
Your options are:
- Unlock w/ your passcode … although it sounds like this option wasn’t selected.
- Unlock w/ password using the “hint” (only if a meaningful hint was setup)
- Correctly enter your password.
There are no other workarounds, bypasses, or recovery means.
The “good news” is there is no missed-attempt lockout or time delay, so you CAN keep on trying.
From Apple: “… If you use a unique password for Notes, there's no way to access your locked notes if you forget the password … “
Source: How to lock or unlock notes on your iPhone or iPad – Apple Support (AU)