Hi ArpitMJ,
The GMAT (and the various practice CATs that you might take to prepare for it) give you the score that you EARN. So you shouldn't be "scared" of a score result - you should 'investigate' it. A big part of properly preparing for the GMAT includes doing review. You should plan to do a full question-by-question review of EVERY CAT that you take.
When you get questions wrong, you need to try to define WHY you got the question wrong. Was it because the question was too hard or that you didn't know the content? Was it because you made a silly/little mistake? How many times do you end up saying "I should have gotten that question correct?" How many times do you "narrow it down to 2 choices and 'guess wrong' in the Verbal?" These are all things that you can fix...and you have to fix them if you want a higher score.
1) What is your goal score?
2) How long have you been studying?
3) What resources have you been using?
4) When is your Official Test Date?
GMAT assassins aren't born, they're made,
Rich