Hindu Monuments most likely existed then, but they've got not survived, Possibly as they weren't designed of stone. A handful of images of recognizable Hindu deities and votive pillars have survived from about a hundred bce to two hundred ce. Hindu temple development started in earnest from your 5th century https://hanumanmandiradelaide.com.au/how-to-celebrate-hanuman-jayanti-at-home-a-guide-to-a-spiritual-and-joyful-celebration/