On a standard type of CRT monitor or TV set, it is normal to have some
static on the screen. It may give a strong static type of shock,
depending on the humidity in the room.
If you are touching any metal parts of the cabinet, or bezel, and you
get a static shock, this can be normal if it is not an AC mains or
direct shock from the power supply.
I have cleaned the front screen with a dampened paper towel on sets
while they are running. I sometimes received very strong static shock
that I really feel. This is normal.