Creating a new variable that counts the values of another embedded variable

What kind of intercept is it? If it's a Custom HTML survey inserted you could have some creative survey logic in the flow which would count it behind the scenes using a bunch of if statements by looking through each fruit individually. You just keep a counter and increment it every time you find a fruit. If you aren't using Customer HTML or something Non-guided where you can't use survey logic I am at a loss short of doing it manually after the fact.

You could do it in the survey with JS added to a question all respondents see. Add fruit_count as an embedded data field at the beginning of the survey flow. Then this JS to a question:
Qualtrics.SurveyEngine.addOnload(function() {
var fcount = "{e://Field/fruit}".split(", ").length;
Qualtrics.SurveyEngine.setEmbeddedData("fruit_count",fcount);
});

Thank you so much, MSobotta and TomG . The survey is just a pop-over, so not using Custom HTML.
TomG I deployed this JavaScript but it's returning

1

https://community.qualtrics.com/XMcommunity/discussion/comment/49868#Comment_49868The split string is probably wrong. I used comma+space because that is what you posted and how Qualtrics delimits multiple answers. Maybe the delimiter is just a comma.

That being said you would have to make sure you are not off by one.

https://community.qualtrics.com/XMcommunity/discussion/comment/49870#Comment_49870That seems to be it! Thanks so much for your help.

https://community.qualtrics.com/XMcommunity/discussion/comment/49881#Comment_49881Good call, thank you!