How do i get a players torso using a server script?

You can access a player's Torso from a server script using this code:

For example, this will TP everyone to the absolute middle of the map.

for i, v in pairs (game.Players:GetPlayers()) do
    v.Character.Torso.CFrame = CFrame.new(Vector3.new(0,0,0))
end

"v" basically represents the players, and "in pairs" means it's looping through a "table" of players. Pretend it's looping through every player in the leaderboard.

You can also access the torso with a touched script using hit.Parent.

script.Parent.Touched:connect(function(hit)
 hit.Parent.Torso  = code here 
end

Hope this helps!

P.S. You can use an if/then statement in the for loop, so you can target certain players.