No error codes but its still not working, and the animation doesnt play?

You have to load the animation first. Also, I'd use UserInputService.

local UserInputService = game:GetService("UserInputService")

local anim = Instance.new("Animation")
anim.AnimationId = "rbxassetid://4975456908"
anim.Name = "TauntAnim"
anim.Parent = script

local tool = script.Parent
local player = game.Players.LocalPlayer

local clicked = false

local loadedAnim

UserInputService.InputBegan:Connect(function(input, gameProcessedEvent)
    if not gameProcessedEvent and input.KeyCode == Enum.KeyCode.E then
        loadedAnim = player.Character.Humanoid:LoadAnimation(anim)
        loadedAnim:Play()
    end
end)

UserInputService.InputEnded:Connect(function(input, gameProcessedEvent)
    if not gameProcessedEvent and input.KeyCode == Enum.KeyCode.E then
        if loadedAnim then
            loadedAnim:Stop()
        end
    end
end)

The InputBegan event fires when an input begins (keyboard, mouse, etc.) Then there's an if statement checking if the player is not in chat, and if the input is "E" on their keyboard. Then the loadedAnimation plays. The InputEnded is the same thing but it stops the animation.