There are a couple of ways to download the fonts in your orders.
First, you can download them directly from your order invoice page:
Simply click View in the Invoice column for any order to view the invoice.
From there, you can click any of the green Download buttons to download the fonts from your order, either single products or the entire order.
Second, you can download any of your font orders on the Your Fonts page:
Simply click any of the green Download buttons to download a specific font or family you have purchased a license.