Has a FIBA World Cup game ever ended 75-52?
Exactly once. On February 26, 2018, Mexico beat Cuba 75-52, and no FIBA World Cup game before or since has ended that way. When it happened it was a scorigami, the first 75-52 in league history.
That makes 75-52 the 475th most common final score out of 1,178 that have ever occurred in FIBA World Cup. One point away, 76-52 has happened never and 75-53 has happened never.