How to reset a value in leaderstats?

Assuming you want to reset the stat for ALL players then what you have to do is..

1) Make a variable that contains the name of the leaderstat you wish to reset.

2) Use a generic for loop to iterate through a table full of all the Players in the server.

3) Set the leaderstat, stored in 'leaderstats', which is in the Player, to 0.

local stat = "Kills" --Name of stat to reset
local players = game.Players:GetPlayers() --All the players

for i,v in pairs(players) do --iterate through all players
    if v.leaderstats then
        local lstat = v.leaderstats:FindFirstChild(stat) --get the stat
        if lstat then --check if stat exists
            lstat.Value = 0 --Reset it
        end
    end
end