Has a College Football game ever ended 55-46?
Exactly once. On November 3, 1956, Army beat Colgate 55-46, and no College Football game before or since has ended that way. When it happened it was a scorigami, the first 55-46 in league history.
That makes 55-46 the 1820th most common final score out of 2,216 that have ever occurred in College Football. One point away, 56-46 has happened 1 times and 55-47 has happened 2 times.