how to find the tag of an objecdt in unity

//Find a single game object
GameObject.FindWithTag("TagName");

//Find multiple game objects from tag 
GameObject.FindGameObjectsWithTag("TagName");

string enemyTag = "Enemy";
Enemies = GameObject.FindGameObjectsWithTag(enemyTag);

if(FindGameObjectsWithTag(Player){
  Debug.Log("FoundPlayer")
  }

gameObject.tag