Sorry, I could not reply earlier.
Have you joined Xbox Live before? If yes, and you do not see your gamer profile on your console, then you can go to Recover Gamertag and follow the on-screen instructions.
If you haven't joined Xbox Live before, you can do that by pressing the Guide Button on the controller, and pressing 'X' which will lead you to a wizard to join xbox Live. Once, there follow the on-screen instructions.
But you would have to keep these points into consideration :
- Set your location as USA.
- Make sure that the Email Address that you are using to join Xbox Live has your location set also as USA. Log into your email address on your PC, go to settings and set your location as USA not Pakistan.
After that you can join or recover your gamertag as you would normally expect to do. See you soon on Live.