It’s technically possible for a college team to score one point in a game. This is because a safety on an extra point attempt is worth 1 point.
Say Team A scores a touchdown and goes for an extra point. The attempt is blocked/intercepted, and Team B runs it back ALMOST all the way to the other goal line. Team B fumbles the ball around the 3 yard line. A player on Team A picks the ball up, but decides to get fancy and backtracks into the end zone in an attempt to find a running lane. He gets tackled in the end zone. Team B scores 1 point.
I’m not sure if this has ever happened.