Sending colleges your score help ASAP

<p>Help! Okay so this is the first time I took the SAT subject test and it was World History this past week. One gets 4 free send scores to colleges thing if you choose your colleges by the Dec. 15th deadline and I was wondering that since I don't want to pay, if I go ahead and chose my 4 colleges and then when the scores come out on the 23rd and I don't do good, can I choose for my score not to be sent out anymore??
And if not, then should I take advantage of the 4 free score reports even if I don't do great or not? Please help the deadline is tomorrow!'</p>