They have direction and magnitude
They are very important because vector quantities or magnitudes allow us to have GPS, compass, and navigational systems. They allow us to get from point A to point B as they are more than a number. They have not only a number but a direction.
Every day the world uses transport systems like trains, plane, cars, and busses and they can only get you to your destination thanks to vectors which allowed for direction, speed, displacement, and position.
Vector quantities may be applied on sports like baseball, while traveling, etc..