how do i open my locked notes with touch id

If you forgot the password, you will not be able to access your notes.

If you try incorrectly a couple of times, it should display a password hint (assuming you entered one when you set your password)

This support article will tell you how to change your notes password for notes going forward.

How to lock notes on your iPhone, iPad, and iPod touch - Apple Support

You must use the password.

You must use the password.

If you don't know it then you can't open the note.