Prefix "[Rank]" or NameTag equipping system?

Help and Feedback Scripting Support
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4

Whenever the player clicks the checkmark, you could have a remote event that fires from client to server, telling the server to store the player nametag. It could be something like:

On the client side:

local ReplicatedStorage = game:GetService("ReplicatedStorage")
local RemoteEvent = ReplicatedStorage.RemoteEvent

if BadgeService:UserHasBadgeAsync(UserId, BadgeId) then
	LockBn.Image = "rbxassetid://17479511743"
	LockBn.MouseButton1Click:Connect(function()
    if LockBn.ImageColor3 ~= Color3.fromRGB(0, 185, 0) then

        --Tells server which nametag it is, and if the nametag was equipped
        RemoteEvent:FireServer(LockBn.Parent.Name, true) 

    else
        RemoteEvent:FireServer(LockBn.Parent.Name, false) 
    end
    end)
end

On a server script:

local ReplicatedStorage = game:GetService("ReplicatedStorage")
local RemoteEvent = ReplicatedStorage.RemoteEvent

local DataStoreService = game:GetService("DataStoreService")
local nametagStore = DataStoreService:GetDataStore("PlayerNametag") --create/access a datastore

RemoteEvent.OnServerEvent:Connect(function(player, nametag, equipped)

	local success, currentGold = pcall(function()
      if equipped then
        --Store the nametag, for the key name, I'd use the player's user id since it is unique
  		nametagStore:SetAsync(tostring(player.UserId, nametag))
      else
          nametagStore:SetAsync(tostring(player.UserId, ""))
      end
	end)

	if not success then
		print(errorMessage)
	end
end)

I would also recommend having a module script or a table to store the prefix text of the nametag for easier access; when a player joins the game, you can use datastore:GetAsync(keyname) to retrieve the player’s nametag, and get the prefix text by looking up the module script/table with the nametag, and then use the remote event to fire back to client to change the nametag.

For more information about data stores:
Data Stores | Documentation - Roblox Creator Hub

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