Firstly, are you sure that your TV is Bluetooth-enabled? If you are, then you will be able to select how the sound is heard by delving into the Menu....Settings....Sound.
If your TV doesn't support Bluetooth, you can buy a "dongle" (a Bluetooth transmitter - lots on Amazon) that plugs into your TV headphone socket and makes it Bluetooth-enabled. It pairs with your Bluetooth headphones and....away you go. I used such a gadget on my previous TV paired with the excellent Sony Bluetooth headphones and it worked very well. The sound will not emanate from the TV speakers, but you can adjust the volume you hear on the headphones.