The Schedule C section V in my 2019 return has added a couple of "?" question mark symbols in the space that should be blank. They won't delete. How do I do it?

Here is a possible fix for the desktop software - 

You will not be able to edit directly on the Schedule C, Part V itself to remove or edit the "other expenses" that appear there if they transferred in from your 2018 return or came in from the Schedule C Worksheet.  The entries you see on Schedule C, Part V that you can't edit come from the Schedule C Worksheet.

While in Forms Mode, look in the left column list of forms, and select the Schedule C Worksheet (may be abbreviated as Schedule C Wks).    On the Worksheet, you can scroll way down to  "Miscellaneous Expenses", and then in that subtopic scroll further down to "Other expenses".   Make your changes or deletes there.   Then check the Schedule C, Part V to be sure your changes flowed correctly from the worksheet to the Schedule C.