If you need to find the question mark "?", Then in the Find What text box, enter "~?." "?" Is a wildcard, instead of any single character, if the direct look, you will find all of the cells that contain data.
If you need to find an asterisk "*", then look for input "~ *" What text box. "*" Wildcard, instead of any number of characters, if the direct look, you will find all of the cells that contain data.
If you need to find a question mark "~", then enter in the Find What "~~" text box. If the direct search, to find the last worksheet cell.