Has a FIBA World Cup game ever ended 100-55?
Exactly once. On February 27, 2022, Senegal beat Kenya 100-55, and no FIBA World Cup game before or since has ended that way. When it happened it was a scorigami, the first 100-55 in league history.
That makes 100-55 the 475th most common final score out of 1,178 that have ever occurred in FIBA World Cup. One point away, 101-55 has happened never and 100-56 has happened 1 times.