How do i know my account is set up

@Slendergleam 

Hmm, I see. I'm not terribly familiar with how the Nintendo account system is set up for the Switch. As far as I know you can transfer your Nintendo account to a different Switch console, but it would remove your account from the previous Switch you were using. I believe it works differently from other consoles where you can log into the same account on multiple devices. You can find more info on how that works at the Nintendo Support website. 

That said, your in-game progress for Apex Legends is saved on the servers, so your progress would still be tied to your account. If you do move your Nintendo account to a different Switch your progress should still be there.