what am i doing wrong here some help please

Other Hardware Sensors
15

Well, that's easy.

const byte buttonPin = 1;
const byte moveForwardPin = 2;

void setup() {
  pinMode(buttonPin, INPUT_PULLUP);
  pinMode(moveForwardPin, OUTPUT);
  digitalWrite(moveForwardPin, LOW);
}

void loop() {
  if (digitalRead(buttonPin) == LOW) {
    digitalWrite (moveForwardPin, HIGH);
  }
}

Assumptions made:
Button is wired between GND and pin 1.
Pin 2 set HIGH makes the robot move forward.
With those assumptions, what this code does: the moment you press the button the robot starts moving forward. That's it.