Has a FIBA World Cup game ever ended 105-51?
Exactly once. On February 26, 2022, Egypt beat Kenya 105-51, and no FIBA World Cup game before or since has ended that way. When it happened it was a scorigami, the first 105-51 in league history.
That makes 105-51 the 475th most common final score out of 1,178 that have ever occurred in FIBA World Cup. One point away, 106-51 has happened never and 105-52 has happened 1 times.