If you know your income total, you can enter that into TurboTax. 1099MISC's do not have to be issued if the amount is under $600, but your income will still need to be taxed, so you should go ahead and enter your income since you know the total.
Within your Turbotax Account (it appears you have Turbotax Deluxe Online), go to your Federal Return and select the Wages & Income tab at the top of the screen. Then, you should be able to scroll down and find a section on Self Employment Income to START or EDIT. Here TurboTax will guide you through entering your income and ask you more questions to determine if this really is a business or if it is more of a side job or hobby. It will also help you determine if you want to enter your business expenses and need to upgrade to a different version of TurboTax as I noted above.
