Has an AFL game ever ended 75-65?
Yes. AFL has seen a final score of 75-65 6 times. It first happened on July 22, 1916, when Richmond beat Fitzroy, and most recently on June 22, 2018, when Port Adelaide beat Melbourne.
That makes 75-65 the 342nd most common final score out of 6,607 that have ever occurred in AFL. One point away, 76-65 has happened 8 times and 75-66 has happened 5 times. At one point the score disappeared for 49 years, between 1962 and 2011.