I want to disable a specific script of the children I don't want to disable the whole object

using System.Collections;
using System.Collections.Generic;
using UnityEngine;
using System;

public class disableComponents : MonoBehaviour {

public int selectedCharacter = 0;

// Use this for initialization
void Start () {
    selectCharacter();
}

// Update is called once per frame
void Update () {
    int previousSelectedCharacter = selectedCharacter;

	if(Input.GetAxis("Mouse ScrollWheel") > 0f)
    {
        if (selectedCharacter >= transform.childCount - 1)
            selectedCharacter = 0;
        else
            selectedCharacter++;
    }
    if (Input.GetAxis("Mouse ScrollWheel") < 0f)
    {
        Debug.Log("--");
        if (selectedCharacter <= 0)
            selectedCharacter = transform.childCount-1;
        else
            selectedCharacter--;
    }
    if(previousSelectedCharacter != selectedCharacter)
    {
        selectCharacter();
    }
}
void selectCharacter()
{
    int i = 0;
    foreach(Transform character in transform)
    {
        if (i == selectedCharacter)
            character.gameObject.SetActive(true);
        else
            character.gameObject.SetActive(false);
        i++;
    }
}

}

Use character.gameObject.GetComponent<ScriptName>().enabled = false;

if I replace character.gameObject.SetActive(false); with what you said and the one whit true it gives an error

@ChristosKapenis