How to change Flutter widget Visibility using Firestore Database in flutter?

Good afternoon, I am developing my application and I want to implement a blue tick visualization system using FireStore database,

here is a screenshot of the user’s document:

here is the whole code

class ProfileMainWidget extends StatefulWidget {
  final UserEntity currentUser;

  const ProfileMainWidget({Key? key, required this.currentUser}) : super(key: key);

  @override
  State<ProfileMainWidget> createState() => _ProfileMainWidgetState();
}

class _ProfileMainWidgetState extends State<ProfileMainWidget> {
  bool isVerify = true;
  @override
  void initState() {

    BlocProvider.of<PostCubit>(context).getPosts(post: PostEntity());
    super.initState();
  }
  @override
  Widget build(BuildContext context) {
    return DynamicColorBuilder(
        builder: (lightColorScheme, darkColorScheme,) {
    return Scaffold(
        appBar: AppBar(
          title:

          Row(
              mainAxisSize: MainAxisSize.min,
              children: <Widget>[
          Text(
             '${widget.currentUser.username}', style: TextStyle( fontWeight: FontWeight.bold, fontSize: 25, ),
           ),
                  Visibility(
                    visible: (isVerify) ? false : true,
                    child: Icon(Icons.verified_sharp, color: Colors.blue,size: 17,),
                  ),
              ]
          ),

I need to hide or show a widget icon from a value in a firestore document, if anyone can help I would really appreciate it, hope my question helps someone.

I’ve looked all over the internet and haven’t found anything, I’ve tried to figure it out myself, but nothing helps.