Untitled

Database - USERS

 username   email      password   wallet
 TESTNAME   TESTMAIL   TESTPASS   99

$wallet = "";
$db = mysqli_connect('localhost', 'root', '', 'registration');
$sql = "SELECT wallet FROM users WHERE username = '$username'"

<!DOCTYPE html>
<html>
    <head>
        <body>
            <p <a href="#">Account: <?php echo $balance; ?><span class="sr-only">(current)</span></a></p>
        </body>
     </head>
</html>