Has an AFL game ever ended 126-122?
Exactly once. On April 25, 1985, St Kilda beat Fitzroy 126-122, and no AFL game before or since has ended that way. When it happened it was a scorigami, the first 126-122 in league history.
That makes 126-122 the 3884th most common final score out of 6,649 that have ever occurred in AFL. One point away, 127-122 has happened 1 times and 126-123 has happened 2 times.