How do I remove remote control cover on sony Bravia tv?

I assume you are asking about the remote itself.

There are 3 screws in the battery compartment, remove them.

Starting from the bottom end pry apart the slit. I use a guitar pick but a thin slot screwdriver or a putty knife will work. The silver trim will stay on the bottom and the top panel will lever up.

This is very tight and you will most likely leave tool marks on the bottom.