I gamble fortnite on my ps4 but go on vacation tomorrow and wanted to ask if I can log in with my fortnite account from my ps4 on my cell phone for nh week and then play on the ps4 again without problems later
Yes. Account is account. I do that too.
Yes this is not a problem. Sign in to the same Epic Games account on your phone. Then you should have your Accs progress on your PS4 on your phone.