Can anyone help me make this script damage other people?

local WaterBullet = game.ServerStorage:WaitForChild("WaterBullet")

game.ReplicatedStorage.Remotes.WaterBullet.OnServerEvent:Connect(function(player,cframe)

local character = player.Character
newWaterBullet = WaterBullet:Clone()
newWaterBullet.CFrame = character.HumanoidRootPart.CFrame

newWaterBullet.Parent = workspace

touchConn = nil

touchConn = newWaterBullet.Touched:Connect(function(hit)
	if hit.Parent:FindFirstChild("Humanoid") then
		if hit.Parent.Name ~= player.Name and hit.Parent.Humanoid then

			if touchConn ~= nil then touchConn:Disconnect() end
			newWaterBullet:Destroy()
		end
	end
end)

wait(2)

if touchConn ~= nil then touchConn:Disconnect () end newWaterBullet:Destroy()

end)

We will be using Debris to remove the bullet after 2 seconds instead of wait(). Debris removes the part after 2 seconds if they still exists, and does not error if the part no longer exists.

TweenService will be used to move the bullet forward, although there are other methods, such as BodyMovers and Hitscan. We take the direction the HumanoidRootPart is facing, and tween the bullet 100 studs that way. The X axis and Z axis might need to be swapped.

To deal damage, we can use :TakeDamage() on the humanoid.

As I did not test this, you might encounter errors, or if you need further explanation, feel free to ask.

local ServerStorage = game:GetService('ServerStorage')
local ReplicatedStorage = game:GetService('ReplicatedStorage')
local TweenService = game:GetService('TweenService')
local Debris = game:GetService('Debris')

ReplicatedStorage.Remotes.WaterBullet.OnServerEvent:Connect(function(player)
	local humanoidRootPartCFrame = player.Character.HumanoidRootPart

	local bullet = ServerStorage.WaterBullet:Clone()
	bullet.CFrame = humanoidRootPartCFrame
	bullet.Parent = workspace

	TweenService:Create(bullet, TweenInfo.new(0.1), {Position = Vector3.new(humanoidRootPartCFrame.LookVector * 100, bullet.Position.Y, bullet.Position.Z)}):Play()

	bullet.Touched:Connect(function(hit)
		local humanoid = hit.Parent:FindFirstChild('Humanoid')

		if humanoid and hit.Parent.Name ~= player.Name then
			bullet:Destroy()
			humanoid:TakeDamage(10)
		end
	end)
	
	Debris:AddItem(bullet, 2)
end)