About 20-30 probally
There are thousands of high school soccer players in the United States of America. There are many more joining soccer every day.
In America, football players. In England, soccer players.
US National Soccer Team Players Association was created in 1996.
Yes soccer players get paid more than basketball player. The reason for this is that Basketball is mostly funded by the US. Soccer is funded by many countries. So soccer is the higher paid sport.
for professional soccer, you can have 30 players as a maximum.