Where do i enter purchases for cost of goods sold if there is no inventory
Since you do not maintain inventory:
When you get to the screen that asks "What kind of expenses did you have for <your business>?", choose the drop-down for "Less common expenses" and select "Other miscellaneous expenses"
Click "Continue"
Scroll down to Expenses; find "Other miscellaneous expenses"; click on the blue Start button
Enter a description such as "Merchandise purchased" and enter the cost of the merchandise that you purchased during the year, including any amounts paid when you purchased the business.