First step:

    struct Response: Codable {
        let dates: [String: CustomDate]
        let metadata: Metadata
        let total: Total
        let updated_at: String //Should be a date, but that adds another complexity
    }

    struct CustomDate: Codable {
        let countries: [String: Country]
        let info: Infos
    }

    struct Infos: Codable {
        let date: String
        let date_generation: String
        let yesterday: String
    }

    struct Country: Codable {
        let date: String
        let name: String
    }

    struct Metadata: Codable {
        let by: String
        let url: [String]
    }

    struct Total: Codable {
        let name: String
    }

I skipped a few things, but it works then with:

    let foundDate = values.dates["2020-11-04"]?.countries["Afghanistan"]?.date
    print(foundDate)