how to get badges on xbox pfp

And the tenure badge for how long you've had a gold/core/ultimate membership.

The Ambassador badge and the recently given Gold badge (for commemorating the end of Gold) are the only badges for regular users. All other badges are only for employees.

I'm wondering how to get badges with numbers on them. I know it's you get gamerscore but I don't know how much.

Can you be more about badge you are referring to and Badges

Most badges are only available for employees. There are only 2 badges for non-employees. If you are eligible for the Ambassador program, you can sign up and earn a badge after completing some activity in the program (http://ambassadors.microsoft.com/xbox) The second badge is only for Xbox MVPs. http://mvp.xbox.com

The top left is tenure. It's to show how long you've had Gold. All of the others were given to employees.