This is wrong i forgot my apple note password now i dont have any option to get my content it was really valuable content

if you mean appleID password https://iforgot.apple.com/password/verify/appleid

if you mean passcode If you forgot the passcode for your iPhone, iPad, or iPod touch, or your device is disabled - Apple Support

If you mean the password in Notes, see the following from https://support.apple.com/en-us/HT205794

Before you can lock your notes, create a password that you can easily remember. If you're concerned about forgetting your password, make sure that you give yourself a password hint and that you set up Touch ID. If you forget your password, Apple can't help you reset it.

and

You can unlock a note only when you enter the password that it's locked with. If you forgot your password, Apple can't help you regain access to your locked notes.

You can reset your password, but this won’t give you access to your old notes. It will, however, let you password protect any notes that you create from that point forward with the new password. This could lead to you having multiple notes with different passwords.

If you have multiple passwords, you can't tell which password you should use when you look at your notes in the Notes list. When you open a note locked by your old password but enter your current password, you'll see an alert that you entered the wrong password with a hint for your old one. If you then enter the correct old password, you get the option to update that note's password to your current one.