Select two.

In the Notes app, you can lock notes to protect your sensitive information. You can access your locked notes using your device passcode or a custom password. If you have multiple Notes accounts, you choose the locking method for each account (for example, your iCloud account). You can also use Face ID or Touch ID to access your locked notes, if you enable this option in the settings. To lock notes with a custom password, you need to go to Settings > Notes > Password, choose an account, and tap Use Custom Password. To lock notes with Face ID, you need to go to Settings > Notes > Password, choose an account, and turn on Face ID. To lock or unlock a note, you need to tap the More button and then tap the Lock icon. You can also lock orunlock all notes in the Notes app by tapping the Lock icon in the bottom toolbar. References: Lock your notes on iPhone - Apple Support, How to Lock Your Secrets in the Notes App (and Why You Should) - Lifehacker