A basketball club in Engpsh is typically called a "basketball team" or a "basketball club." Alternatively, you could also refer to it as a "basketball association" or a "basketball organization."
For example, you could say "I'm a member of the school's basketball team" or "I play for a local basketball club." Alternatively, you could say "I belong to a basketball association in my community" or "I'm part of a basketball organization at my university."