How do I fix my California state tax return when it keeps saying rejected no matter how many times

Without a description of your reject code, I cannot fully assist you. Did you receive an ACTION NEEDED! e-mail from TurboTax?

If you received an ACTION NEEDED! email from turbotax@intuit.com, it'll give you a brief explanation of your reject and how to update it. You can also sign in to your TurboTax account and select Fix my return to see your reject code and explanation. Follow any “fix it” instructions to update the information causing the rejection, and continue through to refile your return (either e-file or file by mail). However, not all rejections will have explicit guides to fixing the information. 

I have noticed that there have been rejections from California due to the county input. If your return is being rejected for your county input, it is important to note that the county name is case sensitive. The first letter of every word should be capitalized and you should only type the name of the county. For example, if you lived in Los Angeles county, you would just write "Los Angeles". 

In this case, you can get back to this screen to reenter the county in TurboTax by following the steps below:

1. Click on State on the left column. 
2. Confirm that a resident return in the State of California is being filed. 
3. Click continue.
4. Answer the questions about your 2019 filing.
5. On the next screen, titled Your Principal Residence, enter your county of residence.
6. Now that the county has been reentered (as outlined above), you can continue to refile your return.