khushalkhans:
You should 100% verify the policy for each school on your list, BUT the short answer is that it should be fine. Generally speaking, as long as you take the exam on or before the deadline, it will count towards that application. In many cases, you can "self report" your unofficial score. The logic is that you ultimately have to show proof with an official score report if and when you are accepted.
FYI, most schools don't start reviewing your application until several days after the submission date. The AdCom needs to get organized internally before the reviewing starts. Also, while this isn't verified, we believe that many AdComs will hold off on reviewing the application for those without GMAT scores, assuming you can't self-report in those cases.
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