It differs from lens to lens:

 RGP contacts, which last for more than one year, need daily cleaning and disinfecting.
Daily disposable soft lenses are worn once, then discarded, with no maintenance required.
Other disposable soft lenses are usually cleaned at the end of the day, then soaked in disinfecting solution until they’re worn again, and may be replaced weekly, bi-weekly, or monthly.
Soft lenses that are replaced quarterly or annually might require weekly enzyming in additional to daily care.