My employment has been terminated, notified 7/9, employer said will not give me a separation agreement with severance detail until last day worked.

Employers in North Carolina are not required to give severance at all and, if an employer offers severance, are is not required to present the agreement to you until the last day of your employment.  However, if your employer has 20 or more employees, and you are age 40 or older, you must be given at least 21 days to consider the agreement once it has been presented to you.