how to change ui text via script unity code example
Example 1: unity change text
// To change text of a text UI element use th combination below
textGameObject.GetComponent<UnityEngine.UI.Text>().text = "text";
Example 2: unity set text value
//Because the Text variable is public,
//you will have to drag the Text box object onto the script in unity.
//So unity knows what text box to apply the script to.
public Text myText;
myText.text = "Enter the text value here!";
By: Barry Cox
Example 3: unity how to change text in script
Text myText = GameObject.Find("Canvas/Text").GetComponent<Text>();
myText.text = "Your text changed!";