Has a FIBA World Cup game ever ended 105-63?
Exactly once. On August 26, 2023, Serbia beat China 105-63, and no FIBA World Cup game before or since has ended that way. When it happened it was a scorigami, the first 105-63 in league history.
That makes 105-63 the 240th most common final score out of 863 that have ever occurred in FIBA World Cup. One point away, 106-63 has happened never and 105-64 has happened never.