Has a FIBA World Cup game ever ended 90-72?
Exactly once. On September 7, 2014, Serbia beat Greece 90-72, and no FIBA World Cup game before or since has ended that way. When it happened it was a scorigami, the first 90-72 in league history.
That makes 90-72 the 240th most common final score out of 863 that have ever occurred in FIBA World Cup. One point away, 91-72 has happened never and 90-73 has happened 1 times.