How to move a game object to a position after selecting it

I'm making a TBS game in w$$anonymous$$ch the player spawns units and moves them towards the enemy base. I have the ability to spawn units now, but i have not even the slightest idea on how to get them to move, im drawing a complete blank, my first objective would be to see if the user clicked a unit, then to collect data from a second click somewhere else wit$$anonymous$$n range of the movement, then if the click was a game object, and the second click was wit$$anonymous$$n movement range, then move the object to that position, my code will be posted below with the movement function $$anonymous$$ghlighted by comments, all i need is just to get the start of the function going, i'm just drawing a blank on how to do t$$anonymous$$s

using UnityEngine; using System.Collections.Generic; using UnityEngine.UI; using System.Linq; using Random = UnityEngine.Random;

public class PlayerBehavior : MonoBehaviour { //public int ActionsPerTurn; public BoardManager boardManager;

 private Vector3 SelectedPosition;
 private GameObject Mbutton;
 private GameObject Bbutton;
 private GameObject Abutton;

 
 GameObject ClickSelect()
 {
     RaycastHit2D $$anonymous$$t = Physics2D.Raycast(Camera.main.ScreenToWorldPoint(Input.mousePosition), Vector2.zero);
     
     if ($$anonymous$$t)
     {
         return $$anonymous$$t.transform.gameObject;
     }
     else return null;
 }
 void Start () {
     boardManager = GetComponent<BoardManager> ();
     SelectedPosition = ClickSelect ().transform.position;
     Mbutton = GameObject.FindGameObjectWithTag("SpawnMsoldier");
     Abutton = GameObject.FindGameObjectWithTag("SpawnAsoldier");
     Bbutton = GameObject.FindGameObjectWithTag("SpawnBSoldier");
     Mbutton.gameObject.SetActive(false);
     Bbutton.gameObject.SetActive(false);
     Abutton.gameObject.SetActive(false);
 }
 // Update is called once per frame
 void Update () {
     if (Input.GetMouseButtonDown(0))
     {
         ClickSelect();
         Debug.Log(ClickSelect());
         if (ClickSelect() == GameObject.FindGameObjectWithTag("PlayerHQ"))
         {
                 Mbutton.gameObject.SetActive(true);
                 Bbutton.gameObject.SetActive(true);
                 Abutton.gameObject.SetActive(true);
         }
         /*else if (ClickSelect() != GameObject.FindGameObjectWithTag("PlayerHQ"))
         {
             Mbutton.gameObject.SetActive(false);
             Bbutton.gameObject.SetActive(false);
             Abutton.gameObject.SetActive(false);
         }*/
         Movement(SelectedPosition);
     }
 }
     //T$$anonymous$$s is the movement function, i tried a few t$$anonymous$$ngs, but again i have no idea what i'm doing
 Vector2 Movement(Vector3 unitPosition)
 {
     Vector2 newPosition;
     unitPosition = ClickSelect ().transform.position;
     if (checkposition (unitPosition) == true) {
         newPosition = ClickSelect ().transform.position;
         Debug.Log ("Satement Entered");
     } 
     else {
         newPosition = unitPosition;
     }
     return newPosition;
 }
 public bool checkposition(Vector3 Position)
 {
     List<List<GameObject>> allActive = new List<List<GameObject>>();
     allActive.Add(GameObject.FindGameObjectsWithTag("Mountain").ToList());
     allActive.Add(GameObject.FindGameObjectsWithTag("PlayerHQ").ToList());
     allActive.Add(GameObject.FindGameObjectsWithTag("PlayerSoldierMarksman").ToList());
     allActive.Add(GameObject.FindGameObjectsWithTag("PlayerSoldierBasic").ToList());
     allActive.Add(GameObject.FindGameObjectsWithTag("PlayerSoldierArmored").ToList());
     allActive.Add(GameObject.FindGameObjectsWithTag("PlayerUnitRailgun").ToList());
     allActive.Add(GameObject.FindGameObjectsWithTag("EnemySoldierMarksman").ToList());
     allActive.Add(GameObject.FindGameObjectsWithTag("EnemySoldierBasic").ToList());
     allActive.Add(GameObject.FindGameObjectsWithTag("EnemySoldierArmored").ToList());
     allActive.Add(GameObject.FindGameObjectsWithTag("EnemyUnitRailgun").ToList());
     allActive.Add(GameObject.FindGameObjectsWithTag("EnemyHQ").ToList());
     
         if (allActive.Any(activeItem => activeItem.Any(activeGameObject => activeGameObject.transform.position == Position)))
     {
         Debug.Log("Spawn Blocked");
         return true;
     }
     return false;
 }

}