How do I unlock my iPhone?

Which One?

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

If you forgot your iPhone passcode, use your Mac or PC to reset it - Apple Support

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

How to unlock your iPhone for use with a different carrier - Apple Support

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

How to remove Activation Lock - Apple Support

This may help --> Access Solutions if Forgot Passcode Passw… - Apple Community