"create a pvp system where players right clicks on another player and the other player gets a gui asking to accept duel both gets teleported in the same place id when the player accepts the duel. show how to set up system"

-- LocalScript inside StarterGui 
local player = game.Players.LocalPlayer
local mouse = player:GetMouse()
local gui = script.Parent.DuelRequest
local remoteEvent = game.ReplicatedStorage:WaitForChild("DuelRequestEvent")

mouse.Button2Down:Connect(function()
    local target = mouse.Target
    if target then
        local targetPlayer = game.Players:GetPlayerFromCharacter(target.Parent)
        if targetPlayer and targetPlayer ~= player then
            remoteEvent:FireServer(targetPlayer)
        end
    end
end)

remoteEvent.OnClientEvent:Connect(function(requester)
    gui.Visible = true
    gui.TextLabel.Text = requester.Name .. " wants to duel. Accept?"
end)

gui.Accept.MouseButton1Click:Connect(function()
    remoteEvent:FireServer(player, true)
    gui.Visible = false
end)

gui.Decline.MouseButton1Click:Connect(function()
    remoteEvent:FireServer(player, false)
    gui.Visible = false
end)

-- ServerScript inside ServerScriptService 
local remoteEvent = Instance.new("RemoteEvent")
remoteEvent.Name = "DuelRequestEvent"
remoteEvent.Parent = game.ReplicatedStorage

local duelArena = game.Workspace.DuelArena
local spawn1 = duelArena.Spawn1
local spawn2 = duelArena.Spawn2

remoteEvent.OnServerEvent:Connect(function(player, targetPlayer, accepted)
    if accepted == nil then
        targetPlayer:WaitForChild("PlayerGui"):WaitForChild("DuelRequest").TextLabel.Text = player.Name .. " wants to duel. Accept?"
        remoteEvent:FireClient(targetPlayer, player)
    else
        if accepted then
            player.Character.HumanoidRootPart.CFrame = spawn1.CFrame
            targetPlayer.Character.HumanoidRootPart.CFrame = spawn2.CFrame
        end
    end
end)

-- To set up the system in Roblox Studio:
1. Create a new ScreenGui inside StarterGui and name it DuelRequest.
2. Inside DuelRequest, create a TextLabel and two TextButtons named Accept and Decline.
3. Customize the appearance and position of the TextLabel and TextButtons as desired.
4. Create a new Folder inside Workspace and name it DuelArena.
5. Inside DuelArena, create two SpawnLocations named Spawn1 and Spawn2.
6. Position the SpawnLocations where you want the players to be teleported for the duel.
7. Create a new RemoteEvent inside ReplicatedStorage and name it DuelRequestEvent.
8. Place the LocalScript and ServerScript code provided above in their respective locations (StarterGui and ServerScriptService).
9. Test the PvP system in Roblox Studio by running the game and clicking on another player's character.