my son disabled my phone due to the wrong passcode. I have the passcode and just need to get to the passcode screen.. How can I do this?

Unfortunatley, once it's locked, you no longer have the option to enter the passcode, you will need to perform a reset on the phone.

If you forgot the passcode on your iPhone, or your iPhone is disabled or unavailable -

How to reset your passcode without a computer if you have iOS 15.2 or higher.

How to remove your iPhone, iPad, or iPod touch passcode without a computer - Apple Support

How to reset your passcode using a computer.

If you forgot your iPhone passcode - Apple Support