Has a FIBA World Cup game ever ended 74-63?
Exactly once. On February 24, 2022, Jordan beat Lebanon 74-63, and no FIBA World Cup game before or since has ended that way. When it happened it was a scorigami, the first 74-63 in league history.
That makes 74-63 the 475th most common final score out of 1,178 that have ever occurred in FIBA World Cup. One point away, 75-63 has happened 2 times and 74-64 has happened never.