You Met the Creator Badge Script

local BadgeService = game:GetService("BadgeService")

local BadgeId = 123456789
local CreatorName = "CREATORNAMEHERE"

game.Players.PlayerAdded:Connect(function()
    if game.Players:FindFirstChild(CreatorName) then
        local Players = game.Players:GetPlayers()
        for i = 1, #Players do
            local Player = Players[i]
            if not BadgeService:UserHasBadgeAsync(Player.UserId, BadgeId) then
                BadgeService:AwardBadge(Player.UserId, BadgeId)
            end
        end
    end
end)