What is ping in fortnite and how do I activate it?
You can't activate anything there. To explain it very simply, it is like how long the game takes until it responds to your input. 0 = no delay, you can imagine the rest. The higher the worse. 5-30ms / ping are normal. But also varies from game to game
So is that already set?
The only thing you can set is that it shows you what kind of ping you have. But I don't know how it works at Fortnite, but it does. Can you look
Open the settings in Fortnite and activate "Connection statistics" in the hub options. Then you will see the ping in the top left corner during the game.