How do I make a script play multiple times on click?

Using a for loop you can run the same peice of code multiple times, while still only writing it once.

function DoSomething(Num)
    print(Num)
end

for i = 1, 5 do -- Start at i = 1 and increase i (by one) until it's more than 5
    DoSomething(i)
end

--- Output:
-- 1
-- 2
-- 3
-- 4
-- 5

Just put what you want to execute in a function. Then call it 5 times either using a for loop or calling the function 5 times.

function doCode()
    --Do Stuff
end

for i = 1, 5 do
    doCode()
end
-- OR
doCode()
doCode()
doCode()
doCode()
doCode()