why isnt my projectile system damaging ontouch?

ok. i made a script that lets you shoot projectiles when you press the key "e" now i need the projectiles to damage npcs on touch. i tried putting every damage script out there in the projectile, nothing worked. heres the script:

local sound = script.fire 
local tweenservice = game:GetService("TweenService") 
local plr = game.Players.LocalPlayer

local tear1 = game.ReplicatedStorage.Player1tear 
local UIS = game:GetService("UserInputService") 

UIS.InputBegan:connect(function(input) 
if input.KeyCode == Enum.KeyCode.E then 
print("Working") 
sound:Play() 
local clonetear = tear1:Clone() 
clonetear.Parent = game.Workspace 
clonetear.CFrame = plr.Character.HumanoidRootPart.CFrame + plr.Character.HumanoidRootPart.CFrame.lookVector * 5 tweenservice:Create(clonetear,TweenInfo.new(1,0,0),{CFrame = plr.Character.HumanoidRootPart.CFrame + plr.Character.HumanoidRootPart.CFrame.lookVector * 40,Transparency = 1},Enum.EasingStyle.Quint,Enum.EasingDirection.Out):Play() 
game.Debris:AddItem(2.5,clonetear) -- change the number of time to wait until the ball dissapear,this can be the ball range untill get deleted
end 
end)

keep in mind: theres a projectile in replicated storage called tear1 theres a sound in the script called fire the localscript in the codeblock goes into starterplayerscripts. any help?????

Seems like you're missing a .Touched which will trigger when the projectile hits something.

UIS.InputBegan:connect(function(input) 
    if input.KeyCode == Enum.KeyCode.E then 
        print("Working") 
        sound:Play() 
        local clonetear = tear1:Clone()
        
        -- Touched event
        clonetear.Touched:Connect(function(hit)
            local hitHumanoid = hit.Parent:FindFirstChildOfClass("Humanoid") -- Check for a humanoid
            if hitHumanoid then 
                -- You'll need to set up some remote events to deal real damage.
                hitHumanoid:TakeDamage(10) -- Deal damage
                game.Debris:AddItem(0, clonetear) -- Remove projectile
            end
        end)
        
        clonetear.Parent = game.Workspace 
        clonetear.CFrame = plr.Character.HumanoidRootPart.CFrame + plr.Character.HumanoidRootPart.CFrame.lookVector * 5
        tweenservice:Create(clonetear,TweenInfo.new(1,0,0),{CFrame = plr.Character.HumanoidRootPart.CFrame + plr.Character.HumanoidRootPart.CFrame.lookVector * 40,Transparency = 1},Enum.EasingStyle.Quint,Enum.EasingDirection.Out):Play() 
        game.Debris:AddItem(2.5,clonetear)
    end 
end)

You will need to use the BasePart.Touched event in the projectile. If you don't know what the Touched even is, it fires when a part touches it.

This script below is the same as @SimpleFlame's answer but I modified a bit.

-- in client script
UIS.InputBegan:Connect(function(input, isChatting)
	if not isChatting then -- checks if the player is not typing in chat
		if input.KeyCode == Enum.KeyCode.E then
			print("Working")
			sound:Play()
			local clonetear = tear1:Clone()
			
			clonetear.Touched:Connect(function(hit)
				local hitHumanoid = hit.Parent:FindFirstChildOfClass("Humanoid")
				local hitPlayer = game:GetService("Players"):GetPlayerFromCharacter(hit.Parent) -- checks if it's a player
				
				if hitHumanoid and not hitPlayer then -- checks if it's not a real player
					game:GetService("ReplicatedStorage"):WaitForChild("DealDamage"):FireServer(10) -- Deal damage
					game.Debris:AddItem(0, clonetear) -- Remove projectile
				end
			end)
			
			clonetear.Parent = game.Workspace
			clonetear.CFrame = plr.Character.HumanoidRootPart.CFrame + plr.Character.HumanoidRootPart.CFrame.lookVector * 5
			clonetear.Velocity = clonetear.CFrame.lookVector * 40 -- shoots the projectile
			tweenservice:Create(clonetear,TweenInfo.new(1,Enum.EasingStyle.Quint,Enum.EasingDirection.Out),{Transparency = 1}):Play()
			game.Debris:AddItem(2.5,clonetear)
		end
	end
end)

-- in server script (ServerScriptService)

game:GetService("ReplicatedStorage"):WaitForChild("DealDamage").OnServerEvent:Connect(function(player, damage)
	local character = player.Character or player.CharacterAdded:Wait()
	local humanoid = character:WaitForChild("Humanoid")
	
	humanoid:TakeDamage(damage)
end)