When you recieved tokens from the bounty campaign you have participated, then ,the token being launched have been designated to different trading sites for exchanges , so look at your tokens and search what exchange sites it will be received.there are many exchange sites, it depends where your token put. My advice is to sell it to a known exchange so that you will not get scammed. But I sell some of the tokens in the yobit and idex market. Sell it with a high price to get a big profit.