federal return shows zero will I get a stimulus payment

as long as you filed in 2018 or 2019, you should get the stimulus 

You may be eligible to receive a Payment if you:

• Are a U.S. citizen or U.S. resident alien;
• Cannot be claimed as a dependent on someone else’s return;
• Have a Social Security number (SSN) that is valid for employment (valid SSN); and
• Exception: If either spouse is a member of the U.S. Armed Forces at any time during the taxable year, then only one spouse needs to have a valid SSN
• Have adjusted gross income below an amount based on your filing status and the number of your qualifying children.

 Check the IRS website and update your bank information if necessary. 

  AGI is line 7 on your 2018 return and line 8B on your 2019 return.  Refund is line 21a of the 2019 tax return. and line 20a for 2018

https://www.irs.gov/coronavirus/economic-impact-payments