@unusgouri,
It depends which page builder you are using for designing your pages.
Use one at a time and edit your page in the backend. Then add that selected component and place wherever you want to then choose these options. Then save
It will show course categories on home page
You can refer this video: https://www.youtube.com/watch?v=_Acg6DOLrd4
We have tutorials for almost everything. Just search for that and you have your solutions with you