Has a FIBA World Cup game ever ended 98-71?
Exactly once. On July 2, 2018, Brazil beat Colombia 98-71, and no FIBA World Cup game before or since has ended that way. When it happened it was a scorigami, the first 98-71 in league history.
That makes 98-71 the 475th most common final score out of 1,178 that have ever occurred in FIBA World Cup. One point away, 99-71 has happened 1 times and 98-72 has happened 2 times.