Severance Pay and unemployment

Hi All, I received the notorious email that everyone else at FDA received , regarding being RIFed. I still do not know how severance or how much I will receive, it’s so confusing to me and can’t seem to figure it out on my own. I’m also very confused because on this website from fda it says you should apply for unemployment. I thoughts you couldn’t apply to unemployment if you are getting severance pay. If anyone knows clear answers, please advise . Also, besides that dreadful email, I have not received anything in my person email or snail mail as an updated sf50 letting me know I’m separated. It’s been a traumatizing year to say the least.

https://www.fda.gov/about-fda/resources-former-fda-employees/benefits-and-pay-information