Most all TV's have HDMI import ports. If you have a computer, tablet, or phone with an HDMI out port (or an HDMI adapter), and a HDMI cable, use the HDMI cable to connect your device to your TV, then set your device to output to external monitor and set your TV to the correct HDMI input port. This is the easiest way to connect, although you'll need to move your device close enough to the TV to reach the cable.
For a wireless connection between your device and your TV, you can use an Apple AirPlay or ChromeCast compatible device.
If you are not using Apple devices, then the easiest way to get Zoom on your TV is using Chromecast. Check to see if your TV is already ChromeCast compatible. If not and you don't already own a ChromeCast dongle device, you will need to purchase one (they start at $29 on Amazon). The dongle connects to the TV through HDMI and thanks to its support for screen mirroring, it can be used to mirror screen from Android smartphones or any device running Chrome browser.
Once you are in Zoom, then -
Alternatively, you can wait until you are in your next Zoom meeting and then -