Checking your own stats
In order to check your Soccer Stars statistics and achievements, you just need to go to the main page of Soccer Stars.
Tap on your avatar in the bottom right of the page.
You will be taken to the Player Profile Window. Here you will be able to check statistics and also go to the achievements area in the bottom right of that page.
Checking your friends' stats
The friends feature in Soccer Stars only works for Facebook-connected accounts.
It is very easy to find the stats of your friends. Just press the Friends button in the bottom left page of the main menu of Soccer Stars.
In the Friends list, press the avatar of a friend and you will be taken to the Player Profile page where you can see more detailed information.