The admissions officers I heard speak directly on the subject, had no issues with kids taking the test two or three times. A couple said if it was more than that they might look at other parts of the application and read between the lines. Did the student seem overly focused on grades? Did they really have nothing better to do on a Saturday morning? If you didn’t look like an OCD grade-grubber taking it four times - would not be a big deal, but if you were trying to get a 2300 to a 2400, it would probably be a slight negative.