Since the sales price covered everything, the house and the improvements, you can just enter the on the HUD for the house and zero for the improvements. You can also split it up, but that is more work. The program should take the depreciation into account for you, if you are entering the sale in the Rental Section (which you should be doing if you rented in 2020).
If you are entering the sale in Sale of Business Property, you will have to add the 2020 depreciation to the accumulated and enter it as a whole.
