Be honest. No reason to hide the scores, people care more about the integrity of the individual more than the test scores. Let them know that, yeah the scores aren't the best, but that you plan on retaking it. Again, the truth.
Yes, visit as many times as you are able to. Go whenever they are able to have you (e.g. UTAs) have good comm and let them know ahead of time so they can expect you. A thank you email goes a long way with the add-on of a follow up visit.
BE YOURSELF. The definition of Bro changes from person to person. The best thing you can do is just be polite and be yourself.