Check out example codes for "unity set position". It will help you in understanding the concepts better.

Code Example 1

// To set the position of a gameobject use the following
GameObject.transform.position = new Vector3(x, y, z);

Code Example 2

GameObject myObject;
// Change the position of myObject like this:
myObject.transform.position = new Vector3(x, y, z);
// Change position of GameObject that this script is attatched to:
transform.position = new Vector3(x, y, z);
// Read the x, y and z positions of myObject:
Debug.Log("x : " + myObject.transform.position.x);
Debug.Log("y : " + myObject.transform.position.y);
Debug.Log("z : " + myObject.transform.position.z);

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