Hindu monuments possible existed then, but they've got not survived, Maybe because they weren't developed of stone. A few illustrations or photos of recognizable Hindu deities and votive pillars have survived from about one hundred bce to two hundred ce. Hindu temple building began in earnest within the 5th century https://hanumanmandiradelaide.com.au/explore-the-sacred-essence-of-the-hindu-temple-in-adelaide/