Retunrn INT valu from Specific button.text

Hi all, it's my firs time with Unity. I have 4 buttons, each one get random int value and print it in the scene. i need to make my buttons work, it should return me the value of the button i click but i not have any idea how to do it.

please help.

 using UnityEngine;
 using UnityEngine.UI;
 using System.Collections;
 
 public class Buttons : MonoBehaviour {
 
     public GameObject ui_b1;
     public GameObject ui_b2;
     public GameObject ui_b3;
     public GameObject ui_b4;
 
     Text b1;
     Text b2;
     Text b3;
     Text b4;
 
     public int B1;
     public int B2;
     public int B3;
     public int B4;
 
         void Start () {
 
         int temp = Random.Range (1,5);
 
         b1 = ui_b1.GetComponent<Text>();
         b2 = ui_b2.GetComponent<Text>();
         b3 = ui_b3.GetComponent<Text>();
         b4 = ui_b4.GetComponent<Text>();
 
   B1 = Random.Range (0, 101);
 
         B2 = Random.Range (0, 101);
 
         B3 = Random.Range (0, 101);
 
         B4 = Random.Range (0, 101);
 
     }
     
     void Update () {
 
         b1.text = ""+B1;
         b2.text = ""+B2;
         b3.text = ""+B3;
         b4.text = ""+B4;
 
     }
 }