Aioros, that's common, don't worry.

Basically all the games on Neopets have a "cut-off score" (which varies by game) that if you score higher than that, your score is reviewed to make sure no cheating was involved. For example, in the game Attack of the Revenge, anytime you score higher than 2000 points, that message you saw pops up.
Usually it only takes a couple of hours for a score to be reviewed, but since this week is a holiday there's probably no one in the office to review your score. So you probably won't see your results show up until sometime Wednesday. When it goes through, you'll get a confirmation via Neomail.
And congratulations, by the way.
