Workers over the age of 40 have up to 21 days to review a severance agreement. All employees are allowed to consult with an attorney about a severance agreement. Senate Bill (SB) 331, signed by Governor Gavin Newsom in 2021, reinforced these laws for California workers.
If you're fired for cause, which it sounds like you will be, then they don't need to give you severance. Normally companies will give something to avoid getting sued for wrongful dismissal, because normally there are steps they need to take in order to avoid those kinds of lawsuits.