DISABLE IPHONE 13 PRO PASSCODE

You need the old passcode to do so.

If you don’t have it, the only chance is resetting the iPhone and hoping, that it isn’t linked to a iCloud (activation lock). Otherwise there will be no way to unlock it. You can check if there is an activation lock here by entering your IMEI or Serial-Number:

[Link Edited by Moderator]

Note that if you choose to disable passcode protection, absolutely anyone who gains physical access to your iPhone for about 5 seconds can add a passcode to it. Locking you out of your own iPhone.

If you add a passcode and then enable Face ID, you rarely have to enter your passcode. But you still need to remember it.

I don't have an iPhone 13. My SE uses Touch ID & passcodes, so the following may be a bit off.

Tap on Settings > Face ID (?) & Passcode > Turn Passcode Off

Is it locked by passcode or Activation Lock?