If you run a small business as an independent contractor, freelancer, single-member LLC, then TurboTax Self-Employed is right for you.
If your Single Member LLC is an S corp you will need to buy the separate Turbo Tax Business program in addition to a personal version. It is only available for Windows and not online. You can buy the Windows Desktop program here,
https://turbotax.intuit.com/small-business-taxes
If it is not an S corp it is a disregarded entity and you file it as self employment on schedule C in your personal 1040 return. You can enter Self Employment Income into Online Deluxe or Premier but if you have any expenses you will have to upgrade to the Self Employed version. Or any of the Desktop programs. But you will get the most help in the Home & Business version.
How to enter income from Self Employment
https://ttlc.intuit.com/community/self-employed/help/how-do-i-report-income-from-self-employment/00/26653