If you’re one of the remaining survivors playing Fortnite on iOS, any V-Bucks you’ve bought over the years are now worthless, and can no longer be spent in-game.
This means that any premium currency bought with real world dollar-doos or pound sterling is absolutely useless. A meaningless figure displayed on your account that’ll forever display your wasted paychecks. Unless it’s a zero, in which case you’re good bud!
As for why this all happened, you can thank the Epic x Apple lawsuit from 2021. Both companies went to war over payment options on the iOS platform. While it was largely a great result for developers, Epic Games still had to pay Apple a hefty fine, and Fortnite has not been listed on the Apple store since. As it’s not downloadable, Epic has not updated it since the legal battle.