Already getting ready for AP testing? Here is a little discussion on sending score that may be helpful for you!
It's hard to decide if you should send AP scores to a university right away, or wait until you see them first.
You can do it either way. I think it's an individual decision.
I suggest that if you are CERTAIN that your child will get a 5, then sending it to the college will make sense. Even if they have a really bad day, they are still likely get a 4, which is not so bad. I have seen others that collect their AP scores and send them all in separately.
Quick review: AP scores are 5 = perfect, 4 = OK, 3 = passing. Scores can be "canceled" and removed from the College Board record - deleted forever - for a small fee. You can also "withhold" your score and wait until you see it before making a decision.
But I know parents often like black or white answers, so let me try to give some general boundaries for your decision.