I want to add more the 1 animation to sword how?

Please bare with me, because this is the first time I'm answering a question.

I thought of it this way.

Use math.random. This will be perfect if you want to have more than 1 animation, but that will not go in order.

Example of math.random

local number = math.random(1, 2)
--the two numbers in the brackets at the end are number ranges. The left number is where it starts at, and the right number is where it ends at (example: (1, 5) would be a number range of 1 to 5).
if number == 1 then
--If the number has chosen 1 then
    print("One has been chosen")
elseif number == 2 then
--If the number isn't any number other than 2, then
    print("Two has been chosen")
end

Without the comments:

local number = math.random(1, 2)
if number == 1 then
    print("One has been chosen")
elseif number == 2 then
    print("Two has been chosen")
end

There are many other uses for math.random, but let's use it in your situation.

Let's take a look at your script now.

local CanAttack = true





script.Parent.Activated:connect(function()

local attack = script.Parent.Parent.Humanoid:LoadAnimation(script.Attack)



if CanAttack == true then

attack:Play()

CanAttack = false

wait(1)

attack:Stop()

CanAttack = true

script.Parent.CanDamage.Value = true

end

end)

Before adding the math.random part, you need to make a second variable to the second aniimation.

local attack1 = script.Parent.Parent.Humanoid:LoadAnimation(script.Attack1)
local attack2 = script.Parent.Parent.Humanoid:LoadAnimation(script.Attack2)

You wanted to play another animation instead of that one animation. So, let's use math.random. Add a variable before attack:Play()

local RANDOM_ANIM = math.random(1, 2)

if RANDOM_ANIM == 1 then
    attack1:Play()
elseif RANDOM_ANIM == 2 then
    attack2:Play()
end

Your script should look like this:

local CanAttack = true

script.Parent.Activated:connect(function()
    local attack1 = script.Parent.Parent.Humanoid:LoadAnimation(script.Attack1)
    local attack2 = script.Parent.Parent.Humanoid:LoadAnimation(script.Attack2)
    if CanAttack == true then
        local RANDOM_ANIM = math.random(1, 2)
        if RANDOM_ANIM == 1 then
        attack1:Play()
        elseif RANDOM_ANIM == 2 then
        attack2:Play()
    end
    CanAttack = false
    wait(1)
    attack1:Stop()
    attack2:Stop()
    CanAttack = true
    script.Parent.CanDamage.Value = true
    end
end)

Remember to rename your 1st animation attack1 and name your 2nd animation attack2. If you want to add more animations, then change the math.random's number range, add a third RANDOM_ANIM, and add make the animation stop.