Hello,
There are already quite a few requests piling up at https://community.openstreetmap.org/t/osm-nepal-category/99698. I think that this post is supposed to be able to tell you what you need to do to request a new category. I’m not one of the admins here, but it looks to me like everything there has been followed. I suspect that you’re just waiting for “it will be reviewed by a member of the @forums-governance once they have some time available.”