What can i do with a icloud locked iphone 5s?

Can i sell it for parts if so how much?

Ck gazelle.com they buy phones in any condition

It's not worth much as spare parts particularly as buyers are wary of purchasing stolen goods which transmit their location.

It's worth whatever you get offered by someone who knows precisely what they're buying. It's also not unknown for police to pose as buyers in order to recover stolen property and make a prosecution.

Selling it for parts is pretty much the only thing you could do.