1998 Toyota Camry clock

Not sure if you are in the USA and if the Camry there is similar to the Australian model but here's what you'll have to do.
Undo 2 Phillips head screws facing up in front of the speedometer.
Carefully prise the plastic surround out from around the instrument binnacle (held at each end by a push-in clip.
Undo 4 Phillips head screws holding the instrument panel in place and carefully move it to the side away from the clock.
You should then be able to push the clock module back into its rightful place.
Please note that this is applicable to the 1998 Australian model - I can't be sure if yours is the same.