Forza 5 pts fail

I have for the game forza 5 on my xbox one the full 1000 gamerscore and 100% full.

but on the 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.