Has a FIBA World Cup game ever ended 115-76?
Exactly once. On August 10, 1990, Italy beat China 115-76, and no FIBA World Cup game before or since has ended that way. When it happened it was a scorigami, the first 115-76 in league history.
That makes 115-76 the 240th most common final score out of 863 that have ever occurred in FIBA World Cup. One point away, 116-76 has happened never and 115-77 has happened never.