Hi ysldacosta,
If you are interested in a number of Top-20 Programs, then you would likely find it beneficial to speak with an Admissions Expert about your overall profile and plans. Those Experts should be able to answer your Admissions questions and help define the specific areas of your profile that could use some improvement. There's a Forum full of those Experts here:
https://gmatclub.com/forum/ask-admissio ... tants-124/Depending on the strength of your OVERALL profile, a 610 might be enough to get you into School (but that Score would almost certainly be at the lower-end of that Schools acceptable 'GMAT range.' The Q39 could be an issue though. Many Business Schools view an Applicant's Quant Scaled Score as an indicator of how that Applicant might handle the 'academic side' of the Program - and a Q39 won't impress anyone. That score implies that you did okay on many of the "math" questions that you saw on Test Day, but you made a lot of little mistakes throughout the section and you missed out on LOTS of 'strategy-based' points. This is meant to say that by focusing on Quant Tactics, you'll be better able to increase your GMAT Score AND better impress how Business School Admissions Officers will view your potential to handle their respective Programs.
If you do choose to retest, then we have to examine your prior studies in more detail. Once you've decided on whether to retest or not, you should post back here (or you can PM me directly) and we can talk through your study options going forward.
GMAT assassins aren't born, they're made,
Rich