Hi sana28102810,
Many Test Takers are unhappy with their initial practice scores, but you really shouldn't be. It's just a measure of your skills right now - and you'll improve on those scores as you study and hone your various test-taking skills. As it stands, no one here knows exactly what you are capable of when it comes to the GMAT, so the more relevant question is "what are YOU willing to do to improve on this score?"
To that last point, it would help if you could provide a bit more information on your timeline and goals:
1) What is your goal score?
2) When are you planning to take the GMAT?
3) When are you planning to apply to Business School?
4) What Schools are you planning to apply to?
GMAT assassins aren't born, they're made,
Rich