There is no single founder of Hinduism
Who established Hinduism? One of the interesting facts about Hinduism, the term "Hinduism" does not include the name of its founder. Unlike Christianity, "Muhammadanism" (an increasingly outmoded label for Islam that was never fit in the first place), Zoroastrianism, Confucianism, and Buddhism. This can be explained quite well by the fact that Hinduism lacks a single, well-known founder.
There is also no specific timeframe given for its "creation." It appears to have developed gradually from elements that were already apparent about 3,500 years ago. Even though their denial may go too far, some historians have claimed that there is no one religion that is properly referred to as "Hinduism" and that the term "Hinduism" first came into use as the name of a religion in the 17th or early 18th century. Hinduism, which is connected with the Indian subcontinent, where about 95% of all Hindus dwell, may be best described as a family of related practices and worldviews, a synthesis or fusion of initially different but more or less compatible concepts and rites.