I have done some bounty campaigns that were unsuccessful.. Also some were scams. But I have received some tokens from few of that projects. So I need to know this, Is there any opportunity that can I use this tokens?

You have two options you can decide to:
1. Sell all your shitcoins if they are already listed and you can get a reasonable price. It's always good to exchange shitcoins to ETH or BTC.
2. If the project is legit and promising you can HODL your shitcoins and hope, that they will be worth much more later.
If you have shitcoins which are not listed yet, you have to keep them in your wallet.
Or send it to another wallet (but this wastes transaction costs (ETH)).