My Solution (Feedback please)

//make a quiz game
//first question
var score = 0;
var firstQ = prompt('What does FCC stand for?');
if (firstQ.toLowerCase()==='free code camp') {
    document.write('<h3>1\) Correct!</h3>');
    if (firstQ) {
        score += 20;
    }
} else { 
    document.write('<h6>Sorry, that\'s incorrect</h6>');
} 
//second question
var secondQ = prompt('What is the shorthand for regular expressions?');
if (secondQ.toLowerCase()==='regex') {
    document.write('<h3>2\) Correct!</h3>');
    if (secondQ){
        score += 20;
    }
} else {
    document.write('<h6>Sorry, that\'s incorrect</h6>');
}
//third question
var thirdQ = prompt('In JavaScript, what does \'var\' stand for?');
if (thirdQ.toLowerCase()==='variable'){
    document.write('<h3>3\) Correct!</h3>');
    if (thirdQ) {
        score += 20;
    }
}
//fourth question
var fourthQ = prompt('Success is my only motherfucking option, \"     \" NOT');
if (fourthQ.toLowerCase()=== 'failure\'s') {
    document.write('<h3>4\) ticka ticka slim shady!</h3>');
    if (fourthQ) {
        score += 20;
    }
}
// fifth question
var fifthQ = prompt('\"Kids should be allowed to break stuff more often. That\'s a consequence of exploration. Exploration is what you do when you don\'t know what you\'re doing.\" Is a quote by who?');
if (fifthQ === 'Niel Degrasse Tyson' || 'Niel Tyson') {
    document.write('<h3>The sagan saga continues....</h3>');
    if (fifthQ) {
        score += 20;
    }
}

//points and rewards
if (score === 100) {
    document.write('<h1>Congratulations, your score is ' + score +' and you get a GOLD crown.</h1>');
} else if (score > 60) {
    document.write('<h2>Congratulations, your score is ' + score +' and you get a SILVER crown.</h2>');
} else if (score > 20) {
    document.write('<h3>You scored a ' + score +' and got a bronze crown. You pretty much suck.</h3>');
} else {
    document.write('<h6>You got them all wrong. your score is ' + score + ' you get nothing.</h6>');
}