The World Cup is an international event played between nations, not clubs. The equivalent for club football is the FIFA Clubs' World Cup (and before it the Intercontinental Cup), which Barcelona has won once. Real Madrid has won three.
Real Madrid can not win a world cup as they are a club and not a country.
Barcelona can not win the world cup, they can only win the champion league.
There are many soccer academies in the world. The ones that come to my mind are the Brazilian soccer Schools. this site may help you. on here you can get all the soccer schools in the world. Go Barcelona!
go to Barcelona and find out
China never won a World Cup