How do you make a sphere jump with a rigidbody attached to it?

Hi, I’m a beginner who would like advice for making a ball jump and bounce on the ground with a rigidbody attached to it.

You should apply force to Rigidbody component.

Or change its velocity

For example:

void Start () {
     GetComponent <Rigidbody> ().velocity = new Vector3 (0, 1, 0);
}