How to add delay on animations?

For that, you should use debounce! It's quite a simple concept firstly you want to create a variable call it debounce or cooldown anything really! And make the variable false. I'm not too sure about what you are asking, if you are trying to achieve a cooldown on your equip/unequip or just animation from what I understand you are asking for animation so here are the building blocks.

local cooldown = false
local cooldownTime = 5 -- cooldown seconds

script.Parent.Equipped:Connect(function(Mouse)
    Mouse.Button1Down:Connect(function()
        if cooldown == false then -- checks if its not on cooldown
            cooldown = true -- sets to cooldown
            animation = game.Players.LocalPlayer.Character.Humanoid:LoadAnimation(script.Parent.Animation)
            animation:Play()

        elseif cooldown == true then -- if its on cooldown it waits cooldownTime and sets false
            wait(cooldownTime)
            cooldown = false
        end
    end)
end)

script.Parent.Unequipped:Connect(function()
    animation:Stop()
end)

Questions concerns and bugs, just comment!