"create a combat sword script inside a tool that plays a swings when players left clicks and the damaged is based on the damage value located inside the tool. and it damages a NPC with a humanoid called Enemy and shows damage numbers when hit."

-- server script 
local tool = script.Parent
local damage = tool.Damage.Value

tool.Activated:Connect(function()
    local user = tool.Parent
    local humanoid = user:FindFirstChildWhichIsA('Humanoid')
    if humanoid then
        local animation = Instance.new('Animation')
        animation.AnimationId = 'rbxassetid://YourAnimationIDHere' -- replace with your sword swing animation ID
        local track = humanoid:LoadAnimation(animation)
        track:Play()
        local hit = humanoid.TargetPoint.Value
        if hit then
            local enemy = hit.Parent:FindFirstChild('Enemy')
            if enemy then
                enemy.Health = enemy.Health - damage
                local damageLabel = Instance.new('BillboardGui')
                local textLabel = Instance.new('TextLabel')
                damageLabel.Parent = hit
                textLabel.Parent = damageLabel
                textLabel.Text = tostring(damage)
                textLabel.Size = UDim2.new(0, 100, 0, 50)
                textLabel.TextColor3 = Color3.new(1, 0, 0)
                textLabel.BackgroundTransparency = 1
                wait(2)
                damageLabel:Destroy()
            end
        end
    end
end)