Make a script that teleports all players to a baseplate after there are 2 players in the game?

This isn't a request site.

I'll try to help you though (just create a script next time!)

So first you would need to count the players in the game.

You can easily do this by counting the children of players

1) Get the children

2) Get the amount of them

Like this

while wait() do
    local plrs = #game:GetService('Players'):GetChildren()
end

The # is to get the amount of them

You test the am of players using if.

To teleport the player you simply change the HRP CFrame

Like this

while wait() do
    local plrs = #game:GetService('Players'):GetChildren()

    if plrs >= 2 then

    end
end

To get all players use for i,v in pairs

Like this

while wait() do
    local plrs = #game:GetService('Players'):GetChildren()

    if plrs >= 2 then
        for index, plr in pairs(game.Players:GetPlayers()) do
            local char = plr.Character or plr.CharacterAdded:wait() -- Get the character of the player

            local HRP = char:WaitForChild('HumanoidRootPart') -- Wait For the HumanoidRootPart
            HRP.CFrame = CFrame.new(x,y,z) -- CHange the XYZ with the position or use script.Parent.CFrame for example
        end
    end
end

Finally you want to add a debounce to not keep teleporting them

Debounce = true

while wait() do
    local plrs = #game:GetService('Players'):GetChildren()

    if plrs >= 2 and Debounce then
        Debounce = false
        for index, plr in pairs(game.Players:GetPlayers()) do
            local char = plr.Character or plr.CharacterAdded:wait() -- Get the character of the player

            local HRP = char:WaitForChild('HumanoidRootPart') -- Wait For the HumanoidRootPart
            HRP.CFrame = CFrame.new(x,y,z) -- CHange the XYZ with the position or use script.Parent.CFrame for example
        end
    end
end

You can run the script again by setting the Debounce to true again

If you have a question, just ask :)