My code work for this challenge. Looking for tips to make it better.

var correctAnswer= 0;

// Changing both answers and questions into an array. 
// This way you can easily expand more question-answer pairs into your quiz for future use, 
// and the whole app looks a little cleaner
//
// However using an object to store those question-answer pairs would be even better - 
// - skipping this solution simply because I don't know if you are familiar with JS objects yet.

var Answers = [];

Answers.push(28);
Answers.push('DARIUS');
Answers.push(2);
Answers.push('BILLS');
Answers.push('GREEN');

var questions = [];

questions.push(parseInt(prompt( ' How old am I?')));
questions.push(prompt( ' What is my name?').toUpperCase());
questions.push(parseInt(prompt(' How many kids do I have?')));
questions.push(prompt(' What is my favorite NFL team').toUpperCase());
questions.push(prompt( ' What color is my car?').toUpperCase());

// By changing questions and answers into array, 
// you can simply loop through both of them and compare parallel values.
// This function will work no matter how many question-answer pairs you've got.
//
// Sidenote: you could use more compact mapping function here. I suggest you to read on .map() method on MDN.

function quiz(Answers, questions) {
  for (let i=0; i<Answers.length; i++) {
    if (Answers[i]===questions[i]) {
      correctAnswer++;
    }
  }
}

// Chaning the scoring part into an independent function as well
// lets you easily change the system in future iterations of the app.
// Maybe you'll want more complex scoring system by adding more grades?
//
// Either way, modular composition of seperate tasks into functions lets you 
// and other programmers more easily understand and change the code.

function score(correctAnswer) {
  if (correctAnswer === 5 ) {
    document.write('<p>Gold crown</p>');
  } else if (correctAnswer === 4 || correctAnswer === 3) {
    document.write('<p>Silver crown</p>');
  } else if (correctAnswer === 2 || correctAnswer === 1) {
    document.write('<p>Bronze crown</p>');
  } else if (correctAnswer === 0) {   
    document.write('<p>No corwn rewared</p>'); 
  }
}

// After establishing all the functions, we can call them to execute the program.

quiz(Answers, questions);
score(correctAnswer);