Has a College Football game ever ended 69-66?
Exactly once. On November 12, 2016, UNLV beat Wyoming 69-66, and no College Football game before or since has ended that way. When it happened it was a scorigami, the first 69-66 in league history.
That makes 69-66 the 1820th most common final score out of 2,216 that have ever occurred in College Football. One point away, 70-66 has happened never and 69-67 has happened 1 times.