I have implemented Google reCAPTCHA v3 in my application. After publishing, I tested it with bots using developer tools, but it consistently returns a score of 0.9.

 var values = new Dictionary<string,
            string> {
                {
                    "secret",
                    secret
                },
                {
                    "response",
                    response
                }
            };
        var content = new System.Net.Http.FormUrlEncodedContent(values);
        var Response = hc.PostAsync("https://www.google.com/recaptcha/api/siteverify", content).Result;
        var responseString = Response.Content.ReadAsStringAsync().Result;

I tried with bots from developer tools , always getting score of 0.9