-Redeem a code on Xbox Series & Xbox One
1. Press the Xbox button (x) to open the guide, and then select Store.
2. Press the View button x) to open the side menu, and then select Redeem.
3. Enter the 25-character code, select Next, and then follow the prompts


-Redeem a code on PS & PC
‌‌Step1-Sign in to PlayStation Network on your PS5, PS4, PS3, PSP or PC.
Step2-Head to PlayStation Store and select the Redeem Codes icon at the top of the page.
Step3-Enter the PSN card code and the funds will be added to your wallet instantly.