GraphQL query to find number of "active" repositories in programming language. Can be run on https://docs.github.com/en/graphql/overview/explorer

Find_languages.graphql

{
  search(query: "language:F# stars:>10 pushed:>=2020-01-01", type: REPOSITORY, first: 100) {
    repositoryCount
    edges {
      node {
        ... on Repository {
          nameWithOwner
          stargazers {
            totalCount
          }
          pushedAt
        }
      }
    }
  }
}