Hey OP. I've been there, I'm sorry if it happens. Top comments here already have great advice. Take notes, DOWNLOAD YOUR ANNUAL REVIEWS NOW, make sure you can log into all hr sites on your personal laptop, makes w2 easier and 401k.
Not a lot of people are talking emotionally though. If you've never been laid off and this is your first, I want to prep you that this is going to hit hard. You don't think so now, but you're about to have massive emotional swings.
The first will be intense numbness and lonliness as you lose access/walk out. You will feel incredibly alone as your world is shut out. I want you to know that you are not alone, there are those who care for you. Tell your significant other, friend, even your mom. Reach out, talk to people if you need to. Ask someone if they want to meet for lunch. Try not to be alone all day. It will level set you and they'll help. You'll feel like you're lost, but knowing people are still there helps immensely.
Don't try to figure out your life that day. You have a great tenure of 7 years. You are allowed to take a break! Obviously I don't know your finances, but I would take a week if you can, or minimum 24 hours before starting to think about your next role. You may feel panicky, like you have to get started, that's normal, but fight that urge. Any plan you make in that state is going to be garbage anyway and you'll need to redo it. Don't do your resume yet, don't start applying, just do something you enjoy. Hobbies, games, family time. It will also help center you.
This is a traumatic experience. No its or buts about it, its a feeling that still haunts me a year later. I still have intrusive thoughts of was I good enough, am I a failure, why was it me? It's something I deal with, and I hope that at least in those first few days my advice will keep you moving.
Feel for you friend, I've seen it