How do I track a stolen iPhone with forgotten Apple Account password?
Phone stolen and forgot apple id password
[Re-Titled by Moderator]
See what you need to do about your forgotten Apple Account Password here --> If you forgot your Apple Account password - Apple Support
This is going to delay you from even trying to track your stolen phone. In the future, do yourself a favor and write down critical passwords someplace safe for easy retrieval.
The sad reality is, most stolen phones are never recovered. I would, if I were you, be prepared to purchase a replacement phone.