Complex sentence: A hit off all three balls, however, scores 10 points, one point shot and 10 points shot is doubled by hitting a cushion before hitting any of the other balls for a total of 2 or 20 points in one shot.
Split into simpler sentences: A hit off all three balls, however, scores 10 points. The score is doubled by hitting a cushion before hitting any of the other balls for a total of either 2 or 20 points in one shot.