The Holy See, also known as the Catholic Church, is the official name of the administrative organization used by the Pope and his assistants' clergy to issue orders to Catholic churches all over the world. PS: The Holy See is a sovereign entity recognized by international law.
Catholic religious leaders are called popes.
Generally speaking, it can be roughly understood that the Holy See is the subject of legal person, the Holy See is the management and decision-making level of legal person, and the Pope is equivalent to the legal representative of the company.