Trouble getting output for my turbidity sensor./using wemos d1 mini

CONNECTED) 
    delay(500);
    Serial.print(".");
  }
  Serial.println("");
  Serial.println("WiFi connected");

  // Connect to Blynk
  Blynk.begin(auth, ssid, pass);
  Serial.println("Blynk connected");
}

void loop() {
  // Read the analog value from the sensor
  int sensorValue = analogRead(sensorPin);
  Serial.println(sensorValue);

  // Send the value to Blynk
  Blynk.virtualWrite(V0, sensorValue);

  // Wait a little before reading the sensor again
  delay(1000);
}
16:48:55.092 -> WiFi connected

only that shows on my serial mon

First of all, you should read this
https://docs.blynk.io/en/legacy-platform/legacy-articles/keep-your-void-loop-clean

also, you should add

Blynk.run();

To the void loop.

Posting snippets of code serves no purpose.
Post your full sketch, and replace any sensitive information such as Auth token and SSID/password with the word “REDACTED”.

Pete.

Incomplet code