How to pass a AJAX call on OctoberCMS – Jquery ajax

Im using OctoberCMS, the user plugin and I want to send data via AJAX to a controller and save the data in the database (in the column of the logged in user).

So I created a new Route in my routes.php

<?php
Route::get('saveHighscore', 'testProfileControllersHighScore@saveHighscore')
->middleware('web');

And a controller

<?php
namespace TestProfileControllers;

use IlluminateHttpRequest;
use IlluminateSupportFacadesDB;
use OctoberRainAuthModelsUser;
use RainLabUserFacadesAuth;

class HighScore extends IlluminateRoutingController
{
function saveHighscore(Request $request) {
    DB::table('users')->where(['id' => Auth::getUser()->id])->update(['highscore' => $request]);
}
}

And my jQuery calls

$.ajax({
        headers: {
            'X-CSRF-TOKEN': $('meta[name="csrf-token"]').attr('content')
        },
        url: "/saveHighscore",
        type: "POST",
        data: highscore
    });

But nothing works. If I call /saveHighscore in my browser with dummy data in the controller, it works fine