Good question... however, score report fees will be the least of your worries.
Unless you have a way of waiving applications fees, that's going to be your big hitter as well as travel expenses if you end up visiting campuses/interviews, etc. Average app fee is $100-200.
Most folks apply to about 2 schools per month with about 6 being the norm and most I have heard being around 10 or 12 (not counting the consortium) but that's insane and people did admit it since you have to get a lot of recommendations and that's a big burden on the recommenders and also managing the application packages becomes a nightmare.
You pick recipients BEFORE you see your score, but if you cancel it, they won't get anyway, so it is irrelevant when you pick your recipients.