How do I make it so you cant see the username list?

I dont want the username list to be there at all is there a way to do that? And if there is a way than what do I do with the script? should I put it in a specific place?

If you mean the PlayerList, then;

if game:FindService("StarterGui")then --If game finds service StartGui then
game:GetService("StarterGui"):SetCoreGuiEnabled("PlayerList",false) --Sets PlayerList into disabled mode
end --The end for the if statement

Hope this helped!

it tells you how on the wiki