How do i make it so when i press a button it gets a new array from a table?

You need a variable to keep track of the index in the array, like this:

id = { "apple", "sad" , 202049 }
index = 1
game.Players.LocalPlayer:GetMouse().KeyDown:connect(function(key)
    if string.lower(key) == "x" then
        print(id[index])
        index = (index % #id) + 1
    end
end)

So, the first time it will run id[1] and increase index to 2. Then it will run id[2] and increase index to 3. Then it will run id[3] and wrap index to 1 (because 3%3 == 0) so that it can repeat this indefinitely.