If you want to find out the proportion of none choices, that's at the very bottom of the counts report.
If you want a count of people who chose at least one none response, then you'll need to export the data and make a count variable in Excel or SPSS or R or whatever you use to analyze data. Code 1 if the respondent ever chooses none and 0 of they do not, then a mean of that variable is the proportion of people choosing none.
Counts analysis does not measure the value of anything - that's what utility reports do, by definition.
