Has an AFL game ever ended 60-57?
Exactly once. On May 11, 1929, Geelong beat St Kilda 60-57, and no AFL game before or since has ended that way. When it happened it was a scorigami, the first 60-57 in league history.
That makes 60-57 the 3836th most common final score out of 6,607 that have ever occurred in AFL. One point away, 61-57 has happened 5 times and 60-58 has happened 3 times.