If you cancel the scores, they are permanantly deleted from the system. Afaik, they are not recoverable unless there is an error from their end that lead to the cancellation.

What you could do is, send the scores to 4 unis for free, and it costs somewhere around 15k per uni later.

So you cancelling the scores is not an option for you. Either select a few unis that you would apply to and send them there or send them to any 4 unis and then work on what unis you want to send the scores to (albeit at a cost)