Approximately how old is Hinduism?

From the beginning of creation. Ramayana of Valmiki was written 12000 years ago from Mahabharata which happened 3500 B.C. Vedas were only compiled in 3500 BC but were created thousands of years ago (before Ramayana) by sage Barahma. If you understand Sanskriti in vedas it is clearly mentioned about other Incarnation which took place thousands of years before Ramayana and Mahabharata. some peoples are arrogant without study bluntly say only 3000 years old this happens when wanna be soldeir go to war by watching YouTube video :))