Has a FIBA World Cup game ever ended 56-44?
Exactly once. On June 4, 1967, Mexico beat Peru 56-44, and no FIBA World Cup game before or since has ended that way. When it happened it was a scorigami, the first 56-44 in league history.
That makes 56-44 the 240th most common final score out of 863 that have ever occurred in FIBA World Cup. One point away, 57-44 has happened never and 56-45 has happened never.