first, click on the drum 25 times or more. Then, click the button that says "+1 Click Power to get beats 2 times faster." Then, after 4 times, it will be sold out. After a while, it will come back, then repeat. And there are other buttons
I got help from my two brothers, who know how to use Scratch. Just to let you guys who are playing know, something happened and it can't be sold out