Has a College Football game ever ended 56-46?
Exactly once. On October 7, 1995, Air Force beat UTEP 56-46, and no College Football game before or since has ended that way. When it happened it was a scorigami, the first 56-46 in league history.
That makes 56-46 the 1820th most common final score out of 2,216 that have ever occurred in College Football. One point away, 57-46 has happened never and 56-47 has happened never.