Hey @AEPAA
events are numbers/metrics. There are three types - counter (increment by 1 everytime they are set in the s.events variable), numeric (increment by more than 1 when they are set) and currency event (usually used to calculate things like shipping cost etc as part of ecommerce events like purchase).
If event is set as undefined, it won't be recorded in the reports and you will not see anything come up in reports.
Cheers.