Hi, I’m new to this app and I want to know how it helps me with my tax and is it reliable

Hello there, @jroberts0011.

Generally, QuickBooks Self-Employed need to pay self-employment tax (SE tax) as well as income tax. Self-employment tax is a National Insurance and Medicare tax primarily for individuals who work for themselves. It's related to the National Insurance and Medicare taxes kept from the pay of most fee earners. 

For more detailed information, you can check this artcile: QuickBooks Self-Employed Overview

Keep me posted if you have follow-up questions and I'll get back to you.