Is the WiFi working for your other devices?
Does the WiFi not show up in your TV's options? If not, are you sure it's turned on in the TV?
The first thing to check would be to make sure you are not currently out of plan data and subject to the Fair Access Policy. You can do so either by looking at the mobile app, the Usage meter or by looking here.
If you are not out of data, the next thing to check would be to make sure that the WiFi signal at the TV is adequate. To check it, you can use the WiFi signal tester in the HughesNet Mobile App, which you can get at both Google Play and The App Store. I'm not familar with the Apple version, but for the Android version click on the orange plus sign on the lower right, and the middle button is the WiFi Gauge.
When you use this, make sure to place the device you're testing with next to the TV, and make sure that the device you're testing with (phone, tablet, etc.) is connected via the same band of WiFi as the TV (2.4GHz or 5GHz), as you want to make sure you're checking the strength of the WiFi band your TV is connected to.
If the signal strength is good, and you are not out of plan data, the next thing to do would be to check your service speed. The instructions for checking your speed are here. Once you've run a couple of tests, reply with the "My Results" page URL so that the test results can be viewed. This way it can be seen if your service speed is the problem.
With all of this said, right now streaming may be difficult. The system is under increased load because of the much higher number of people home and online. As well, HughesNet has implemented a prioritization policy that favors schooling and business related activities, which means that under periods of high load, streaming will take a back seat. And, because Netflix uses adaptive streaming, what may work on your phone may not work well on your TV, as your TV requires higher bandwidth than your phone to stream the same item.