Since the late January, Samsung had been rolling out the last est ONE UI 2.0 built on top of the Android 10 for the Galaxy S9 but until now, the update is now reaching Verizon based Galaxy S9 with the update expected to arrive over the air in the next few days because the roll-out seems to be undergoing stages.
Upon installation you’ll be able to start running the latest Android 10 with the Samsung’s newest One UI 2.0 built on top of that. The update will include February security patch level which is the most recent.
Your new software version after installation will be QP1A.190711.020.G960USQU7DTA8. Meanwhile you can run some manual check to see if you’re getting the update just in case you didn’t recieve any notification about the update just yet. To do that, Head over to the Settings > System updates > Check for system updates. You’ll need to be on Wi-Fi.