Thanks to anyone want answer to my doubt
When the airdrop is completed you can check your balance by pasting your public address into etherscan.io
That will show you if you have received a token by clicking on the tokens tab.
Then, it will tell you the details to input into my ether wallet etc (whicever you use).
It will state: Contract address, the symbol (eBTC for example) and how many decimals. You put that infor into your wallet and it will show your balance.
From there you need to transfer to an exchange which trades the token you just received. When on there you can sell it for BTC or ETH.
Hope this helps.
Great Help!!! thanks