Assets/playerrontroller.cs(27,55): error CS0019: Operator `*' cannot be applied to operands of type `meth0od group' and `float' help

here is the script
using UnityEngine;

[RequireComponent(typeof(playermotor))]
public class playercontroller : MonoBehaviour {

[SerializeField]
private float speed = 5f;

private playermotor motor;

void start()
{
	motor = GetComponent<playermotor> ();
}

void update ()
{
	// calculate movemment speed as 3d vector
	float _xmov = Input.GetAxisRaw ("horizontal");
	float _zmov = Input.GetAxisRaw ("vertical");
	
	Vector3 _movhorizontal = transform.right * _xmov;
	Vector3 _movvertical = transform.forward * _zmov;

	//  final movement vector 
	Vector3 _velocity = (_movhorizontal + _movvertical).Normalize * speed;

	//apply movement
	motor.move (_velocity);
}

}

Change this.

    Vector3 _velocity = (_movhorizontal + _movvertical).Normalize * speed;

To this.

    Vector3 _velocity = (_movhorizontal + _movvertical).normalized * speed;

Normalize(Vector3) is used as a function to change the current vector.

normalized returns a new vector.