Step1: First of all open the redemption portal of Garena Free Fire.
Step 2: After this log in with Facebook, Apple, Twitter or Google ID
Step 3: After logging in you will see a text box. There you have to enter the redeem code and press the OK button.
Step 4: Gifts will be credited to your account within 24 hours of entering the codes.
For information, let us tell you that these codes can be used only once. Again, you cannot use any of these codes again.