GetGeocoding.cs

public async Task<Location> GetGeocoding(Address address)
{
    var apiClient = new HttpClient();
    var key = Environment.GetEnvironmentVariable("GOOGLE_KEY");
    var addressToUse = BindAddress(address);
    var url = "https://maps.googleapis.com/maps/api/geocode/json?" +
        $"address={addressToUse}" +
        $"&language=pt-BR" +
        $"&key={key}";

    using HttpResponseMessage responseMessage = await apiClient.GetAsync(url);
    if (!responseMessage.IsSuccessStatusCode) throw new Exception(responseMessage.ReasonPhrase);

    Coordenates coordinates = await responseMessage.Content.ReadAsAsync<Coordenates>();
    return coordinates.Results[0].Geometry.Location;
}

private string BindAddress(Address address)
{
    var city = _context.Cities
        .Include(c => c.State)
        .FirstOrDefault(c => c.Id == address.CityId);

    var stringToUse = $"{address.Number}+" +
                      $"{address.Street.Replace(" ", "+")}+" +
                      $"{address.Neighborhood.Replace(" ", "+")},+" +
                      $"{city?.Name.Replace(" ", "+")},+" +
                      $"{city?.State.Name.Replace(" ", "+")}";

    return stringToUse;
}