Assign a constant score on the querying field based on the value in another field

MongoDB Atlas Atlas Search
1

I am using MongoDB atlas search. How can I assign a score for one field based on the value in another field? In the below example I have an array of objects called tags with two properties - name and tag_category.

The data structure is like this in MongoDB.

{
  “_id”:ObjectId(“6094e1dd0ac22244fd1cd5c3”),
  "tags":
      [ 
            { 
            "name":"India", 
            "tag_id":"6094e1bb72bff620f43b0f77", 
            "tag_category":"region" 
            },
            { 
            "name":"something else", 
            "tagid":"aaaae1bb72bff620f43b0faa", 
            "tag_category":"general" 
            }
      ]
}

Note that I am querying for tags.name here.

I want to have a score of 15 for tags.name when tags.tag_category is “region” and score of 5 when tags.tag_category is “general” when query matches search result.

In the above example, when my query matches “India”, I want the result to have the score of 15 as the tag category is region. If it matches “something”, score should be 5 as the tag category is general

How can I achieve this? Any help is appreciated