The Monopoly live money wheel has 54 segments, and to reach the bonus feature, you need to bet on and win a 2 rolls or 4 rolls segment.
There are three 2 roll segments, so the odds of winning is 3/54. There is only one 4 roll segment, and the possibility of landing on it is 1/54. As such, betting on 2 rolls provides greater odds, but you'll get fewer board moves in the virtual bonus round.