Has an AFL game ever ended 39-24?
Exactly once. On July 30, 1921, Fitzroy beat Carlton 39-24, and no AFL game before or since has ended that way. When it happened it was a scorigami, the first 39-24 in league history.
That makes 39-24 the 3836th most common final score out of 6,607 that have ever occurred in AFL. One point away, 40-24 has happened never and 39-25 has happened 1 times.