Developing a website 4 live Mcx & local bullion rates but no trading. So how can i get a data conneciton, where i can decrypt and convert data and rebroadcast data to my clients.?

Vimal, if you intend to show live prices of any stocks/commodity, you need to speak to the exchanges, take permission, and also buy some kind of data vending package from them. If you don’t, and you rebroadcast data, exchange will construte this as a violation/data piracy.