This kind of question is not appropriate and doesn't belong to normal and respectful communication. Let's talk about something else that is meaningful and appropriate.
Yes. Your snap score is related to your overall activity on the app. Posting stories is a form of activity. If people engage with your stories by viewing, screenshotting, or replying, it can boost your snap score as it shows you are being active and engaging with your friends on the platform.
In some cases, yes. If the additions make your story more compelling and draw in more users, it could increase your snap score. But it also depends on the quality and relevance of the added content.
No. Snap popularity is more related to the number of followers, views on your snaps, and interactions like comments and shares on your own content, not just watching stories.