how to unlock my apple 11 pro max

 Which One?

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

If your phone is carrier locked - How to unlock your iPhone for use with a different carrier - Apple Support

If your phone is Activation Locked - How to remove Activation Lock - Apple Support

Follow these instructions -

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

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

How to reset your passcode using a computer.

If you forgot your iPhone passcode - Apple Support

Then select the correct option of the three I posted for you.