For example, a movie:
Request https://api.themoviedb.org/3/movie/550?api_key=[MY_KEY]&language=en-US
See "popularity": 25.06,

{
  "adult": false,
  "backdrop_path": "/87hTDiay2N2qWyX4Ds7ybXi9h8I.jpg",
  "belongs_to_collection": null,
  "budget": 63000000,
  "genres": [
    {
      "id": 18,
      "name": "Drama"
    }
  ],
  "homepage": "http://www.foxmovies.com/movies/fight-club",
  "id": 550,
  "imdb_id": "tt0137523",
  "original_language": "en",
  "original_title": "Fight Club",
  "overview": "A ticking-time-bomb insomniac and a slippery soap salesman channel primal male aggression into a shocking new form of therapy. Their concept catches on, with underground \"fight clubs\" forming in every town, until an eccentric gets in the way and ignites an out-of-control spiral toward oblivion.",
  "popularity": 25.06,
  "poster_path": "/adw6Lq9FiC9zjYEpOqfq03ituwp.jpg",
  "production_companies": [
    {
      "id": 508,
      "logo_path": "/7PzJdsLGlR7oW4J0J5Xcd0pHGRg.png",
      "name": "Regency Enterprises",
      "origin_country": "US"
    },
    {
      "id": 711,
      "logo_path": "/tEiIH5QesdheJmDAqQwvtN60727.png",
      "name": "Fox 2000 Pictures",
      "origin_country": "US"
    },
    {
      "id": 20555,
      "logo_path": null,
      "name": "Taurus Film",
      "origin_country": ""
    },
    {
      "id": 54051,
      "logo_path": null,
      "name": "Atman Entertainment",
      "origin_country": ""
    },
    {
      "id": 54052,
      "logo_path": null,
      "name": "Knickerbocker Films",
      "origin_country": "US"
    },
    {
      "id": 25,
      "logo_path": "/qZCc1lty5FzX30aOCVRBLzaVmcp.png",
      "name": "20th Century Fox",
      "origin_country": "US"
    },
    {
      "id": 4700,
      "logo_path": "/A32wmjrs9Psf4zw0uaixF0GXfxq.png",
      "name": "The Linson Company",
      "origin_country": ""
    }
  ],
  "production_countries": [
    {
      "iso_3166_1": "DE",
      "name": "Germany"
    },
    {
      "iso_3166_1": "US",
      "name": "United States of America"
    }
  ],
  "release_date": "1999-10-15",
  "revenue": 100853753,
  "runtime": 139,
  "spoken_languages": [
    {
      "iso_639_1": "en",
      "name": "English"
    }
  ],
  "status": "Released",
  "tagline": "Mischief. Mayhem. Soap.",
  "title": "Fight Club",
  "video": false,
  "vote_average": 8.4,
  "vote_count": 14510
}

Hi @KashishSharma,

Unfortunately the rank is not available on the API. If this is something you are interested in, you can pull down the popularity data and build your own ordered list. The easiest way to do this would be to use the daily ID file exports. They contain all of the movies/tv shows/people and have the popularity weight field included.

Thanks, @travisbell !!