Hi Veenu,
GMAC has publicly stated that the Official Score that you earn on Test Day is within +/- 30 points of actual ability. Assuming a similar 'swing' in how your CATs function, your recent CAT score results - along with your Official Score - show that you essentially performed the same each time (about 620 +/- a few points). You handle certain aspects of the GMAT consistently well, but you also make certain consistent mistakes.
Approximately 4 weeks ago, I sent you a PM with some questions about your prior studies (leading up to your first attempt) - and those details are still relevant (especially now, if you have gotten "stuck" at this particular Score level).
In addition to those questions, what specific application deadlines are you facing in June and July?
GMAT assassins aren't born, they're made,
Rich