It depends on where you are, so which country are you from? find a reputable local Bitcoin exchange that will let you sell your Bitcoin/cryptocurrency and receive the payment directly to your bank account, I'm sure if your country has no issue with Bitcoin there is/are exchanges already available locally, but also be sure that your bank allows buying and selling cryptocurrencies because there are some that freezing customers account because of have transactions related to cryptocurrency. Some alternatives are Bitcoin atms or sell it here in the forum using an escrow.