Has an AFL game ever ended 126-34?
Exactly once. On May 21, 2006, St Kilda beat Carlton 126-34, and no AFL game before or since has ended that way. When it happened it was a scorigami, the first 126-34 in league history.
That makes 126-34 the 3836th most common final score out of 6,607 that have ever occurred in AFL. One point away, 127-34 has happened 1 times and 126-35 has happened never.