Hi LidiiaShchichko,
On Test Day, there's a search tool that can help you to find the Schools that you want to send your Score to. If you have not made any decisions on where you want to apply yet, then that's fine (for example, if you're not planning to apply for several years, you might not have put too much energy into determining the exact Schools that interest you). That having been said, you might still consider choosing some Schools that make sense (re: some 'dream' Schools and some 'local' Schools) - since it will cost you an additional fee to have your Scores sent later on (currently, the fee is $28 per School).
1) When are you scheduled to take the Official GMAT?
2) What is your Score Goal?
3) How have you scored on EACH of your CATs/mocks (including the Quant and Verbal Scaled Scores for EACH)?
GMAT assassins aren't born, they're made,
Rich