Sale of business property form won't delete

I accidentally checked that my rental property sold in 2020.  I filled out the requested info and Turbotax calculated a taxable gain.  I have tried multiple ways to delete the form4797.  I followed the directions in Turbotax after searching for "sale of business property" and for "rentals".   I have also tried to manually delete the form in Forms mode.  Nothing works.  The gain still is calculated and shows that i owe taxes on it.  Help!!!