Wants to build me pc but I only have money for 2400g and vega 56 is enough for fortnite
Then take at least a 2600 and not 2400g
Take a r5 2600 and a RX590 even cheaper with it
"Just money" for a Vega 56. That's more than enough. Yes, Fortnite runs perfectly, but it would be better, as others have already said, to combine a R5 2600 with a RX 580/590.