Has an Olympic Baseball game ever ended 12-5?
Exactly once. On August 1, 2020, Israel beat Mexico 12-5, and no Olympic Baseball game before or since has ended that way. When it happened it was a scorigami, the first 12-5 in league history.
That makes 12-5 the 48th most common final score out of 87 that have ever occurred in Olympic Baseball. One point away, 13-5 has happened 1 times and 12-6 has happened never.