Since I paid back my RMD on my inherited IRA from CARES act and answered the question "none" as instructed under the 1099R section why is still shown as a taxable income?

To be able to tell TurboTax that this was rolled over, you'll need to tell TurboTax, when asked, that this was not an inherited IRA.  (Code-4 distributions are not normally eligible for rollover, so TurboTax doesn't normally allow you to indicate that you rolled them over.)