Has a FIBA World Cup game ever ended 62-56?
Exactly once. On November 24, 2017, Angola beat Morocco 62-56, and no FIBA World Cup game before or since has ended that way. When it happened it was a scorigami, the first 62-56 in league history.
That makes 62-56 the 475th most common final score out of 1,178 that have ever occurred in FIBA World Cup. One point away, 63-56 has happened never and 62-57 has happened 1 times.