My brake light is not working neither with front or rear brake,maybe someone have advice before I start checking everything(the bulb is OK),I dont believe that both switches gone bad
Thanks

First port of call, check your fuse box to see if any of them is burnt. If that is ok, then check all connection for oxidation, wire corrosion, spray WD-40 and see what happens.

If all fail speak to Kev and he will give you a set of checks to run to see where the faulty connection might be.