It all matters, and the better your score is overall, the better off you will be. Obviously, the math portion isn’t going to be as important, but it will still have an impact.

If I remember correctly, you can just retake that section, and keep your other score. I am not 100% on that, though.

I would suggest you go speak with an old college professor who has a good feel for your grades/experience/personality, and explain your situation to them. They could probably advice you fairly well on the situation, especially if they have been teaching a while.

You will probably get into a program(a good one, I would venture), even if you accept the scores as they are. So if you did your best on the math, that is what I would do.