"create me a roblox data player template and say to me wehre to put it"

A Roblox data player template is usually a script that is placed in the ServerScriptService. This script is responsible for saving and loading player data. Here is a basic template:

```lua
local DataStoreService = game:GetService("DataStoreService")
local myDataStore = DataStoreService:GetDataStore("MyDataStore")

game.Players.PlayerAdded:Connect(function(player)
    local leaderstats = Instance.new("Folder")
    leaderstats.Name = "leaderstats"
    leaderstats.Parent = player

local coins = Instance.new("IntValue")
    coins.Name = "Coins"
    coins.Parent = leaderstats

local data
    local success, error = pcall(function()
        data = myDataStore:GetAsync(tostring(player.UserId))
    end)

if success and data then
        coins.Value = data
    else
        coins.Value = 0
    end
end)

game.Players.PlayerRemoving:Connect(function(player)
    local success, error = pcall(function()
        myDataStore:SetAsync(tostring(player.UserId), player.leaderstats.Coins.Value)
    end)

if success then
        print("Data saved successfully!")
    else
        warn("Failed to save data: "..error)
    end
end)
```

This script should be placed in ServerScriptService. It creates a new folder called "leaderstats" for each player when they join the game, and within that folder, it creates an IntValue called "Coins". It then attempts to load data from the data store using the player's UserId as the key. If it successfully retrieves data, it sets the player's coins to the retrieved value. If it doesn't retrieve any data (which would be the case the first time a player joins the game), it sets the player's coins to 0. When the player leaves the game, it saves their coins value to the data store.