@Masser @papashaun: The Note 10+ should receive monthly security updates, provided you are inside the region where the phone is intended to be used. To ensure you're set up to receive the updates, please head to Settings > Biometrics and Security > Other Security Settings > Security Policy Updates, and make sure that this option is toggled on. Now, tap the Back button to return to the Biometrics and Security landing page, and tap on Security Update to check for the latest version in your region (Wi-Fi connection required).
Updates are rolled out in batches, and will reach some Galaxy users sooner than others. If you have your phone set up to receive Security Policy Updates via the steps provided in my previous post, then you will be able to download any updates as and when they're made available. In the meantime, you can also head to Settings > Software Update > Auto Download Over Wi-Fi, as this will automatically download available updates when you connect to a Wi-Fi router.