Hindu monuments possible existed then, but they've got not survived, Maybe because they were not built of stone. Some pictures of recognizable Hindu deities and votive pillars have survived from about a hundred bce to two hundred ce. Hindu temple building started in earnest from the 5th century ce in https://hanumanmandiradelaide.com.au/establishing-neem-karoli-baba-statue-at-hanuman-temple-south-australia/