Has a FIBA World Cup game ever ended 85-66?
Exactly once. On February 25, 2022, Brazil beat Uruguay 85-66, and no FIBA World Cup game before or since has ended that way. When it happened it was a scorigami, the first 85-66 in league history.
That makes 85-66 the 475th most common final score out of 1,178 that have ever occurred in FIBA World Cup. One point away, 86-66 has happened 1 times and 85-67 has happened never.