Decide How to Install Android 10
The Galaxy S10 Android 10 roll out is moving slowly. If you're feeling impatient, you might want to download the update right now.
If you don't want to sit around waiting for the Over-the-Air update you can manually install the Android 10 update right now.
If you're interested in manually installing Android 10, you should get familiar with the installation process right now.
If the process seems too complicated for your skill set, wait for the update to arrive OTA.