I have for the game forza 5 on my xbox one the full 1000 gamerscore and 100% full.
but on the forzamotorsport.net page 990 gamerscore are displayed.
in the archive element under rewards fail me so 5 pts.
sorry for my bad englisch
You are talking about the Reward page, correct?
If so, don’t worry. It will be updated later, it always takes a while.