How do I download the TurboTax for c corp 2023 business taxes?

[xmasbaby0]

To file a return for a prior tax year

 If you need to prepare a return for 2021, 2022, or 2023  you can purchase and download desktop software to do it, then print, sign,  and mail the return(s)

https://turbotax.intuit.com/personal-taxes/past-years-products/

You may also want to explore purchasing the software from various retailers such as Amazon, Costco, Best Buy, Walmart, Sam’s, etc.

[mapuppo]

does this include state?

[VolvoGirl]

Not for the separate Business program.  Click on State Additional on the Business box on that link.