int button = 14;
int count = 0;

long countMillis = 0;

void setup() {
  Serial.begin(115200);
  Serial.println("Hello, ESP32!");
  pinMode(button, INPUT_PULLUP);
}

void loop() {
  if (digitalRead(button) == LOW)  {
    count = count + 1;
    delay(200);
  }
  if (millis() - countMillis > 5000)  {
    countMillis = millis();
    if (count > 3)  {
      Serial.println("TEST");
      count = 0;
      delay(1000);
    } else  {
      count = 0;
    }    
  }
  Serial.print("Count: ");
  Serial.println(count);
  Serial.print("Millis: ");
  Serial.println(millis());
  delay(10); // this speeds up the simulation
}