Hindu monuments likely existed then, but they've not survived, Possibly since they weren't built of stone. A few photographs of recognizable Hindu deities and votive pillars have survived from about a hundred bce to 200 ce. Hindu temple design began in earnest from the fifth century ce in northern India https://hanumanmandiradelaide.com.au/dr-shri-shyam-sundar-parashar-ji-event/