Hi Arvind90,
Considering how the Covid-19 virus is impacting everyone's opportunity to take the GMAT (and perform their best), it's possible that this year's application cycles might be notably different from cycles of the last several years. By extension, a 650/Q50 MIGHT be a far more competitive Score than it would have been in the past. Unfortunately, there's no way to know for sure at this point what may occur in the lead-up to this year's Round 1 applications (or during the application window itself), so you might want to reach out to each of those Schools directly to gather more information.
If you are interested in retaking the GMAT, then the logical next step would be for you to take a NEW practice CAT - so that we can get a better sense of your current skills, strengths and weaknesses. In addition, if you have any questions about how you might best restart your GMAT studies, then you can feel free to contact me directly.
GMAT assassins aren't born, they're made,
Rich