It's not just about the score. PDs are looking for all sorts of things. They don't want to interview an anti-social brainiac. But I get your question, we all wondered about it during the process. Totally subjective, but here you go...
<64(185): Retake the exam. This is a failing Step 1 score. May be possible to match with non-cat year(s) or with some extraordinary application.
64-68(185-195): This is still a failing Step 1 score. It may be possible to match to a program if you apply VERY broadly, but you will probably need a non-categorical intern year. Most people would still retake with this score. The chances for a 6-year interview are pretty slim with this score unless you've been a non-cat.
68-74(195-210): This is a passing Step 1 score. Matching is definitely feasible, but you should apply broadly to be safe. You will not get most interviews. 71 is the mean CBSE of matched residents.
74-80 (210-225): You have a good shot at matching, but there’s no guarantee. You may get around 25-50% of your interviews if the rest of your app is solid.
80-84 (225-235): Average medical student score. You will get a majority of interviews (assuming solid app otherwise).
84-90 (235-250): Exceptional. You will get most interviews (assuming solid app otherwise).
90+ (250+): 1-5 people have this score per cycle. A score this high might actually raise some eyebrows (in a bad way). Any score beyond 80 or 85, it really doesn't make a difference.