you don't need to remove any screw, if you have the owner's manual it should tell you how.
I had a gen4 camry before.it uses H4 bulb, hope you get the right one, unless you have a gen 4.5 camry...
this is how you change the headlight
1. Unplug the connector (pull on it, not twisting it), and remove the rubber cover (just pull it off)
2. Release the bulb retaining spring, take out the bulb and put in the new one
(NO twisting required, the spring held the bulb there)
3. Reinstall the rubber cover, connect the connector..
People!! he has a H4 bulb, stop telling him to twist the bulb

.. that's for gen 4.5 9006 or 9005 bulb