buttons/actions question

This is my sketch for one button/ one relay:

const int buttonPin = 2;   
const int relPin =  13;     
int buttonState = 0;        

void setup() {
 
  pinMode(relPin, OUTPUT);
   pinMode(buttonPin, INPUT);
}

void loop() {

  buttonState = digitalRead(buttonPin);
  if (buttonState == HIGH) {
        digitalWrite(relPin, HIGH);
  } else {
    
    digitalWrite(relPin, LOW);
  }
}