theNumberofButtonPressesPerAmountOfTime.ino

int button = 8;
void setup(){
  pinMode(button, INPUT);
  Serial.begin(9600);
}
unsigned long prevMillis = 0;
unsigned long prevMillisButtonCheck = 0;
unsigned long currentMillis;
boolean buttonCheck = false;
int count; //the number of button presses per interval
void loop(){
  currentMillis = millis();
  
  //record if the button is pushed
  if(digitalRead(button) == HIGH){ 
    buttonCheck = true;
  }
  //if 30 milliseconds have passed, and the button is released, and the butotn has been pushed
  if(currentMillis - prevMillisButtonCheck >=30 && 
     digitalRead(button) == false &&
     buttonCheck == true)
     {
       count++;
       buttonCheck = false;
       prevMillisButtonCheck = currentMillis;
     }
    
  if(currentMillis - prevMillis >= 1000){
    Serial.println(count);
    count = 0;
    prevMillis = currentMillis;
  }
}

boolean checkforClick(){
  int check = false;
  if(digitalRead(button) == HIGH){
    check = true;
  }
}