In the past, the only way to participate in the excitement of betting on sports was by visiting a Sports Booking Operator. You had to fill in information and pay fees. Today the apps for betting on sports are clearinghouses. They register and process bet calls and pay out. In Avengers Endgame , such as Nevada the sport betting industry has been made legal online. Depending on the law, it could take some time before it becomes legal in your state.