Hey @sarahfroggatt78 and @emela.husic,
At present, Klaviyo does not offer a method to run a report to show the number of times a subscriber must be emailed in order for them to convert and make a purchase. Klaviyo does have the capability for a number of predictive analytics reports to provide for you based on your customer/subscriber activities, which you can learn more about from the Guide to Klaviyo's Predictive Analytics.
Absolutely love this idea of being able to see a predictive conversion based on the number of email outreaches, though! I’ll certainly be sharing this feedback and idea with our Product and Data Science team!
Thank you both for being a part of our Klaviyo Community!
-David