Has an AFL game ever ended 47-22?
Exactly once. On September 10, 1898, Sydney beat Carlton 47-22, and no AFL game before or since has ended that way. When it happened it was a scorigami, the first 47-22 in league history.
That makes 47-22 the 3836th most common final score out of 6,607 that have ever occurred in AFL. One point away, 48-22 has happened 1 times and 47-23 has happened 1 times.