How can i recover my passcode on my notes i forgot my combination of my passcode and i need to open this note because its my confidential account notes hope you can help me to resolve this thank you so much

Click on this link to read 'How to lock notes on your iPhone, iPad, and iPod touch' --> https://support.apple.com/HT205794

"To unlock a note, you need to enter the password that it's locked with. If you forgot the password, Apple can't help you regain access to your locked notes. You can create a new password, but this won’t give you access to your old notes. A new password will let you password protect any notes that you create going forward with the new password."

Without the correct password, those notes can never be opened

The only way is by entering the password that you used. Fortunately, you have unlimited guesses.