Activation lock, QR code

Has the iPhone been disabled because of a forgotten passcode for the Lock Screen?

In this case, the iPhone has to be erased and set up again.

If your iPhone has iOS 15.2 or later installed, and you don'T have access to a computer, follow the steps in this article:

How to reset your iPhone, iPad, or iPod touch when you forgot your passcode - Apple Support

To erase it using a computer, follow this one:

If you forgot your iPhone passcode - Apple Support

If this is about the Activation Lock that you can't disable, contact the owner of the Apple ID shown on the iPhone screen, to have the Activation Lock disabled by him:

Activation Lock for iPhone, iPad, and iPod touch - Apple Support

If you can't reach the previous owner and /or have the original purchase receipt, contact Apple Support and ask them to disable the Activation Lock.

Follow the steps on this Apple page to do that:

Additional Support - Activation Lock

In case this is about the activation of your new device, check this article:

If you can't activate your iPhone or iPad (Wi-Fi + Cellular) - Apple Support

Sorry, but I'm still confused.

Are you trying to receive the code for the Two-Factor Authentication?

Two-factor authentication for Apple ID - Apple Support

You can receive the code on your trusted device or get a text message, check this article about it:

Get a verification code and sign in with two-factor authentication - Apple Support