Has an AFL game ever ended 122-117?
Exactly once. On July 8, 1978, Richmond beat Geelong 122-117, and no AFL game before or since has ended that way. When it happened it was a scorigami, the first 122-117 in league history.
That makes 122-117 the 3883rd most common final score out of 6,649 that have ever occurred in AFL. One point away, 123-117 has happened never and 122-118 has happened 2 times.