​
Code Explained - The Score Page :

import 'package:flutter/material.dart';
import './landing_page.dart';
import 'package:flutter/material.dart';
import './quiz_page.dart';
import './missedquestions_page.dart';
import './list.dart';
import './testslist.dart';
import './page.dart';
class ScorePage extends StatelessWidget {

  final int score;
  final int totalQuestions;

  ScorePage(this.score, this.totalQuestions);

  @override
  Widget build(BuildContext context) {
    return new Material(
        color: Colors.blueAccent,
        child: new Column(
          mainAxisAlignment: MainAxisAlignment.center,
          children: <Widget>[
            new Text("Your Score: ", style: new TextStyle(color: Colors.white, fontWeight: FontWeight.bold, fontSize: 50.0),),
            new Text(score.toString() + "/" + totalQuestions.toString(), style: new TextStyle(color: Colors.white, fontWeight: FontWeight.bold, fontSize: 50.0)),

            new IconButton(
                icon: new Icon(Icons.arrow_right),
                color: Colors.white,
                iconSize: 200.0,
                //onPressed: () => Navigator.of(context).pushAndRemoveUntil(new MaterialPageRoute(builder: (BuildContext context) => new LandingPage()), (Route route) => route == null)
                onPressed: () => Navigator.of(context).pushAndRemoveUntil(new MaterialPageRoute(builder: (BuildContext context) => new Page()), (Route route) => route == null)
            ),
            new Text("(Tap Icon To Continue)", style: new TextStyle(color: Colors.white, fontSize: 15.0, fontWeight: FontWeight.bold),),
          ],
        )
    );
  }
}

---