A:AnswerAll (if any) fees and taxes will be paid during the transaction so there shouldn't be any added on fees while using the gift card via externally.
A:AnswerIf he is an avid Fortnite player (assuming you are asking about the Vbucks) then yes. He may need some assistance /permission from his parents /guardians to complete the redemption process but it is easy enough to figure out if they are the ones who put protections in place to limit/restrict in game spending .
A:AnswerHello that bad news you can’t do that only if you have PayPal or credit card there not the same thing rogue company is another game so it would not be possible for that to happen if you use it it would be on fortnite only.
A:AnswerDo what I do and spend the last week and a half on live chats where there agents "don't have the access" to help you or on hold with their customer service team. Absolutely awful customer experience. There's a reason all of their stores will become Halloween stores.
A:AnswerSorry but it can’t not is region locked so you can use it on part on the us but if you use it like Europe you will have to buy a normal gift card.
A:AnswerYes. When you go to Fortnite's page in the Epic store to redeem the card you will be asked what platform you want the Vbucks to be purchased on. At that point you would just select Playstation and login with your PSN credentials
A:AnswerI haven't done it myself. My son does it. As far as I know there are instructions on the back to go the Fortnite website to get an activation code. Then you apply that code to whatever system you are playing on - Playstation / Xbox / Nintendo / etc.