bro buy a tempo marker. open it's back, there will be a piece of cotton soaked in ink, take that out. then leave the marker in a tub of soapy water so that the tip becomes free from ink. remove it after a day and dry it. now make the tip thinner with a blade to adjust to the scratches. use this for the touchup. you can get paint from any good paintshop by checking the paint details on chassis plate or using fuel door. when you fill the scratch park the car in sunlight and cover the touched up area with plastic. after it is better compound it to level with your paint.
lastly keep a gun in your car to get rid of the fool