The infrared receiver for a TV's remote already has a very sensitive amplifier. If you amplify it more then the output will be full of noise or saturated by visible light then it won't work.
If you amplify the current for the IR emitter in the remote then the IR LED will burn out.
You could add many more IR LEDs, add a driver circuit for them and add a much bigger battery in the remote for a greater range.
my remote has one led its a pihllips tv. i was thinking of using an instrumentation amplifier with an op amp since i am not so good at usual transistor amplifier how do get the right led?
If your TV is fairly new then its remote should have a range of about 10m.
Mine reflects off things and has a range that is farther.
Yours must have a dead battery.