volatile int count = 0;
int btnPIN = 2;
bool pressed = false;

void press(){
  pressed = true;
}

void setup() {
  Serial.begin(9600);
  pinMode(btnPIN,INPUT);
  attachInterrupt(digitalPinToInterrupt(btnPIN),press,HIGH);
}

void loop() {

  if(pressed && digitalRead(btnPIN) == LOW){
    count++;
    pressed = false;
  }
  Serial.print("Count:");
  Serial.println(count);
  delay(100);
}