Sign in to your Google account on YouTube
Use a payment method that is valid for India
Set your Google Play country to India if eligible
Use an India billing address that matches your payment method
Subscribe to YouTube Premium through the YouTube app or website while your account is set to India
If you are in the USA, use YouTube Premium only if your account region and billing setup are legitimately set for India
Contact Google Support if your country setting or billing country does not match your current situation