gameobject_find.cs

using UnityEngine;
using UnityEngine.UI;
 
public class ShowNumberOfCanvasChildren : MonoBehaviour
{
    private GameObject _canvas;
    private Text _childText;
 
    private void Start()
    {
        // grab an object in the scene called Canvas
        _canvas = GameObject.Find("Canvas");
 
        // and grab some text in a child of the object
        // that this script is attached to
        _childText = this.transform.FindChild("ChildText").GetComponent<Text>();
    }
 
    private void Update()
    {
        // on every frame, modify that text
        _childText.text = "Canvas child count: " + _canvas.transform.childCount;
    }
}