Has a FIBA World Cup game ever ended 80-52?
Exactly once. On July 3, 2022, Egypt beat DR Congo 80-52, and no FIBA World Cup game before or since has ended that way. When it happened it was a scorigami, the first 80-52 in league history.
That makes 80-52 the 475th most common final score out of 1,178 that have ever occurred in FIBA World Cup. One point away, 81-52 has happened never and 80-53 has happened never.