Haw many orthodoxy in the world?

Orthodox Christianity primarily refers to the Eastern Orthodox Church, which consists of 14 to 15 autocephalous (independent) churches, including the Greek Orthodox, Russian Orthodox, and Serbian Orthodox churches, among others. Additionally, there are Oriental Orthodox churches, such as the Coptic and Armenian Apostolic Churches. In total, there are approximately 300 million adherents to Orthodox Christianity worldwide, making it one of the major branches of Christianity.