Why do I keep getting an Parse Error (unexpected '=' at line x)? [duplicate]

Trying to implement a login form and keep getting this error when I try it out.

Parse error: syntax error, unexpected '=' in C:\xampp\htdocs\Assignment2\checkLogin.php on line 34

Looking through the code, I can't see anything obvious.

The error is pointing to the SQL query but not quite sure what's up with it?

    $conn = mysqli_connect($db_server, $db_serverUname, $db_serverPwd, $database);
     if (mysqli_connect_errno())
        {
            print("Error connecting to MySQL database". mysqli_connect_error());
        }else {
           
            $SQL_Query = "SELECT * FROM 'login' WHERE 'username' = '".$username."'" AND 'password' = '".$password."'""; 
            $result = mysqli_query($conn, $SQL_Query);
            header("index.html");
            $result = mysqli_query($conn, $SQL_Query); 
            $num_rows = mysqli_num_rows($result);