There is more than one game during the world cup, 25B is the total number of non-unique people who watched all the games. It says that 700M people watched the

There is more than one game during the world cup, 25B is the total number of non-unique people who watched all the games. It says that 700M people watched the final. If that many people watched every game there would have been ~35 games total (potentially watched by the same 700M people). I have no idea how many games in total are actually part of the world cup.