Has an AFL game ever ended 38-29?
Exactly once. On May 15, 1920, Fitzroy beat Carlton 38-29, and no AFL game before or since has ended that way. When it happened it was a scorigami, the first 38-29 in league history.
That makes 38-29 the 3836th most common final score out of 6,607 that have ever occurred in AFL. One point away, 39-29 has happened never and 38-30 has happened 2 times.