You can receive funds with HDFC from most regions of the world. HDFC offers a host of convenient facilities to receive money in India from abroad. You can use SWIFT/ telegraphic transfers, QuickRemit, IndiaLink, demand drafts, cheques, and third party fund services to receive money from abroad.
Banks and other providers all set their own rates, so there’s no one answer. But for all intents and purposes, there is a ‘real’ rate out there. It’s called the mid-market rate.
If you're receiving this amount as an income, you may have to declare it any pay taxes on it accordingly.