App owners now could use App Store Connect analytics to get stats on in-app events performance.
App Analytics in App Store Connect helps you see how people discover and engage with your apps. You can now view information about your in-app events, including event page views, reminder and notification data, and the number of downloads and redownloads that were driven by your in-app events. Each metric can be viewed by territory, source type, device, and more, so you can understand how your in-app events are influencing your apps’ growth and success.
Apple Developer
Apple Developer: Analytics now available for in-app events
Recommendations
Developer:
Business as usual.QA engineer:
Business as usual.PM/DM:
Check analytics, if in-app events are used.