Hindu Monuments likely existed then, but they may have not survived, Probably since they were not designed of stone. A couple of visuals of recognizable Hindu deities and votive pillars have survived from about one hundred bce to 200 ce. Hindu temple building started in earnest from the 5th century https://hanumanmandiradelaide.com.au/hanuman-mandir-adelaide-a-spiritual-sanctuary-in-south-australia/