Hindu monuments probable existed then, but they've got not survived, Possibly since they weren't created of stone. A couple of images of recognizable Hindu deities and votive pillars have survived from about one hundred bce to two hundred ce. Hindu temple development began in earnest with the 5th century ce https://hanumanmandiradelaide.com.au/how-to-do-pooja-on-hanuman-jayanti-a-step-by-step-guide-for-a-meaningful-celebration/