What is a step by step walkthrough of knowing user interest called?

I want to understand,

After login in Apple Music, I am asked " what genre/artist is of my interest " and displays a set of bubbles that I can select.

1. What is this step by step process of understanding user's preference before suggesting them with content called ? Ideally done to better understand user interest so that the product can give the user personalized recommendation.

2. Is there a specific UX/industry term for this ?

3. What are the best practices to do this. If anyone can point at some sources.

Thank you