You can take the loss for your business. To do this you will need to add the business information, income and associated expenses.
You will need the TurboTax Self-Employed. This can be done from your Free Edition by going to the Self-Employment Tab in the income section. You will assist to add your business and upgrade.
If you choose not to upgrade to the Self-Employed edition, you are not required by the IRS to claim business losses to your 2017 return.