Re: Results Slides

#1 Yes. This section of the User Guide may get you started on doing that: 

https://community.articulate.com/series/articulate-storyline-360/articles/articulate-storyline-360-user-guide-how-to-add-result-slides

#2 depends on what the course designer/SME wants

#3 That sounds like something of more interest to the instructor than the developer. At any rate, it is up to the LMS on how, when, and where the results are made available.