Hello @BttrdPancakes!
With Virtual Terminal you can select an item to complete a payment. To do this, navigate to the Virtual Terminal section of your online Square Dashbaord > click Take a Payment > and then click on the Itemized Sale tab at the top of the screen. When you click the blank field below 'Amount or item' your item library will start loading and you can search for and select an item.
This Product Update post has an overview of adding an item to a Virtual Terminal payment. From your Virtual Terminal. I hope this helps!
