Hi medhawi,
To answer your immediate question: there are a number of different Quant and Verbal Scaled Score 'combinations' that can earn you a 720+ on the Official GMAT - but they all require that you perform at a relatively high level in BOTH sections.
In another post, you recently stated that you were planning to take the Official GMAT in April, 2021. Many GMATers spend 3 months (or more) of consistent study time before they hit their 'peak' scores, so you have given yourself a lot of potential study time - which is a smart choice on your part.
Have you actually started studying yet? If you have (or are about to) it would be a good idea to take a FULL-LENGTH practice CAT Test; you can take 2 for free at
www.mba.com (and they come with some additional practice materials). If you want to do a little studying first, so that you can familiarize yourself with the basic content and question types, then that's okay - but you shouldn't wait too long to take that initial CAT. That score will give us a good sense of your natural strengths and weaknesses and will help provide a basis for comparison as you continue to study. A FULL CAT takes about 3.5 hours to complete, so make sure that you've set aside enough time to take it in one sitting. Once you have that Score, you should report back here and we can come up with a study plan.
I'd like to know a bit more about your timeline and goals:
1) Is your goal score 720 or something else?
2) When are you planning to apply to Business School and what Schools are you planning to apply to?
3) Since you're still in Engineering School, how many hours do you think you will be able to consistently study each week for the GMAT?
GMAT assassins aren't born, they're made,
Rich