point system for car game

Hi! I want to make a point system for my car game.
Here is the code for jumping tricks (pretty simple)

using UnityEngine;

using System.Collections;

public class Jumping : MonoBehaviour {
public GameObject nissan350z;

// Use this for initialization
void Start () {

}

// Update is called once per frame
void Update () {
if(Input.GetKey("1"))
	{
	transform.Rotate(Vector3.forward * (100*Mathf.PI) * Time.deltaTime);
	}
	if(Input.GetKey("2"))
	{
	transform.Rotate(Vector3.up * (100*Mathf.PI) * Time.deltaTime);
	}
	if(Input.GetKey("3"))
	{
	transform.Rotate(Vector3.down * (100*Mathf.PI) * Time.deltaTime);
	}
	if(Input.GetKey("4"))
	{
	transform.Rotate(Vector3.left * (100*Mathf.PI) * Time.deltaTime);
	}
	if(Input.GetKey("5"))
	{
	transform.Rotate(Vector3.right * (100*Mathf.PI) * Time.deltaTime);
	}

}
}

So I wondering if it’s possible to make a system that each time I push 1,2,3,4 or 5, and land properly, I should get a certain amount of points.
Thanks, any help will appreciated.
PS: I am new in coding/scripting.

using UnityEngine;
using System.Collections;

public class Jumping : MonoBehaviour { public GameObject nissan350z;

	private int tmpScore = 0;
	
	// Update is called once per frame
	void Update () {
		if(Input.GetKey("1"))
	  	{
	    	transform.Rotate(Vector3.forward * (100*Mathf.PI) * Time.deltaTime);
			tmpScore += 5;
	    }
	    if(Input.GetKey("2"))
	    {
	    	transform.Rotate(Vector3.up * (100*Mathf.PI) * Time.deltaTime);
			tmpScore += 10;
	    }
	    if(Input.GetKey("3"))
	    {
	   		transform.Rotate(Vector3.down * (100*Mathf.PI) * Time.deltaTime);
			tmpScore += 15;
	    }
	    if(Input.GetKey("4"))
	    {
	    	transform.Rotate(Vector3.left * (100*Mathf.PI) * Time.deltaTime);
			tmpScore += 20;
	    }
	    if(Input.GetKey("5"))
	    {
	   		transform.Rotate(Vector3.right * (100*Mathf.PI) * Time.deltaTime);
			tmpScore += 25;
	    }
	}
	
}

This code will add 5,10,15,20,25 relative to the number keys pressed (1,2,3,4,5) to a tmpScore variable. Now what you need is a way to determine if the car has landed properly… This could be done with colliders/triggers under the car or through a more complicated script.
Once the car has landed properly you will need to add the tmpScore to the current score of your player.

score += tmpScore

I will need more information about the game (Probably need to see a live demo) in order to figure out which solution would be best for checking if the car lands properly.