Error BCE0043: Unexpected token: :. what is expected?

i got this code off YouTube for a basic enemyAI and the only error im getting is at (4,26) saying : is unexpected, so what is expected. by the way im running te free version of unity.

public class FollowBotAI : MonoBehaviour
{
   Transform; Leader;
   float; AISpeed = 10;
   float; MaxDistance = 10;
   float; MinDistance = 2;
   
     void Start(){
     Leader = GameObject.FindGameObjectWithTag("Player").transform; 
       }  
       
     void Update(){
       Transform.LookAt(Leader);
       AI();
       }
     
     void AI(){
       if(Vector3.distance(Transform.position, Leader.position) >= MinDistance)
       {
       Transform.position += Transform.forward*AISpeed*Time.deltatime;
       
       if (Vector3.Distance(Transform.position, Leader.position) >= MaxDistance)
         {
         AIDie();
         }
       }
     }
     
     void AIDie(){
       Destroy(GameObject);
     }
    }

There are semicolons between your variable data type and variable name in your variable declarations like here between Transform and Leader, float and AISpeed:

Transform; Leader;
float; AISpeed = 10;

Remove those.

Transform Leader;
float AISpeed = 10;

Do this for all the other variable declarations.