Has an AFL game ever ended 59-55?
It has. 59-55 has been a AFL final 3 times in 16,622 games. The first was Carlton beat Sydney on September 6, 1919; the latest was GWS beat Essendon on August 7, 2020.
That makes 59-55 the 1534th most common final score out of 6,607 that have ever occurred in AFL. One point away, 60-55 has happened 3 times and 59-56 has happened 4 times. At one point the score disappeared for 91 years, between 1929 and 2020.