how do i get child of gameobject unity code example

Example 1: find child of gameobject unity

gameObject.transform.Find("ChildGameObject").gameObject;

//This insures that you are finding the child instead of finding another
//GameObject's Child.

Example 2: how to reference a child object unity

private void Start()
    {
        parentObject = GameObject.Find("Parent");// The name of the parent object
        childObject = parentObject.transform.GetChild(0).gameObject; // the parent index (starting from 0)
    }