Your request has been queued. It may take several hours before the scores are updated, depending on how many pending requests there are.
In general I recommend only requesting an update of scores for a song if you have recently played that song and know that your best score is either missing or out of date. An automatic process updates all songs with "old" data so there is usually no need to request updates for every song. This request update feature allows players to get much quicker updates of scores for the most popular songs.