Hindu Monuments very likely existed then, but they've got not survived, Probably because they weren't designed of stone. A few illustrations or photos of recognizable Hindu deities and votive pillars have survived from about 100 bce to two hundred ce. Hindu temple building started in earnest with the fifth century https://hanumanmandiradelaide.com.au/establishing-neem-karoli-baba-statue-at-hanuman-temple-south-australia/