Has an AFL game ever ended 47-23?
Exactly once. On May 31, 1913, Geelong beat Essendon 47-23, and no AFL game before or since has ended that way. When it happened it was a scorigami, the first 47-23 in league history.
That makes 47-23 the 3836th most common final score out of 6,607 that have ever occurred in AFL. One point away, 48-23 has happened 5 times and 47-24 has happened 3 times.