There is no answer to that as it will depend on lots of things, like how important a game is, how popular a team is and how big the stadium the match is being played in is. You could have just a few people at a match right up to tens of thousands at one. The biggest soccer stadium in the world, which is in India, can hold 120,000 people.
It depends on the size of the stadium.
Many, many baseball players, football players, soccer players and various other sports.
You probably meant "How many fans does soccer have worldwide?".
Teams qualifiable for the UEFA (Europe) competitions total about 140 thousand players. There is no way of making an accurate count of how many people play soccer. There are billions of soccer fans.
Hundreds of millions of soccer fans. But they do not have a well-known team.
Soccer is very popular in Italy and there are many fans of the game
how many soccer fields will fit in the london olympic games stadium
US Soccer players steady at 18.2 Million
for professional soccer, you can have 30 players as a maximum.