How to track or lock stolen phone

You did have a Passcode on the iPhone, correct?

The phone is locked. Unless you had a very simple to guess Passcode, there is no way that anyone could ever guess your Passcode in the very limited number of tries that are allowed before the phone won't even allow any more log on attempts.

Your iCloud Password is the same as your Apple Account Password. Please use the link below:

If you forgot your Apple Account passwordApple SupportOfficial Apple Support › en-us

More info here: If your iPhone or iPad was stolenApple SupportOfficial Apple Support › en-us

You can't without access to your account. The first step is to gain access.

If you forgot your Apple Account password - Apple Support

Then, as long as you had Find My turned on, you can follow the steps here:

If your iPhone or iPad was stolen - Apple Support

In any case, your phone is still locked as long as you were using a Passcode and it cannot be accessed. If the thief attempts to guess the Passcode, the phone will be disabled after too many failed attempts. Of course you would not want to have a Passcode such as "1111" or "1234".

You did provide a second number or other contact information....as Apple requested.....so that you can be notified.....correct?

If not, you will need to try one of the alternate methods listed in the Apple Support document.

Try actually reading the support document.

other contact information such as?

Such as reading the other information under the heading of " If you don't have a trusted device"