Please follow the below steps to redeem Epic Games Product Code :
1. Visit the Epic Game website and log in to your account;
2. Click on your "Account" menu and then click on the "Redeem Code" option;
3. Enter the "Redeem Code", you purchased into the box highlighted in red and click on the "Redeem" button;
Note: You should receive a message that the code was successfully redeemed.
4. The game will be available in your Epic Games Launcher Library.