You will get a Zoom call from your manager and a rep from HR. During the call, you will likely lose your links to e-mail and internal networks.
They will e-mail you a copy of your severance agreement and any associated NDA, non-compete, etc. at a personal address for your review. They will give a deadline to accept and make contact/have a call with HR regarding that acceptance. All of the signature stuff will happen via DocuSign or some other similar service. As part of that agreement, any company equipment like laptops and phones will need to be returned in working order. They will arrange either a courier pick-up, a FedEx shipment, or an appointment for you to physically drop off the gear at a Nike location.
It will be quick and very sterile.