By following these instructions, you'll swiftly progress towards acquiring your desired free rewards:

1. Go to the official Fortnite website.
2. Log into your Epic Games account.
3. Look at your username in the top right corner of the screen.
4. Click on the 'Redeem Code' option from the list.
5. Copy your desired code and enter it.
6. Click the 'Redeem' button and activate the code in your account to claim your free reward.