The upstox referral amount is currently Rs 400. If you refer someone in the upstox, then you will get 400 rupees for every successful referral right now.
By the way, this referral amount which is changing varies, sometimes 500 rupees and 400 rupees are received on each referral.
You can check once in your upstox account before referring.
You can raise tickets for more information if you want.
Not yet opened an account on upstox, so open your account and invest in stocks.