Does severance delay my unemployment claim? after 12 years as a delivery driver

I was offered severance of 12 weeks after being let go as a delivery driver and I am unsure how it affects benefits. I have been trying to stay organised about it. The agreement mentions a release and a payment schedule. Who should I ask before signing?

Before signing, I asked a friend who is a lawyer to look at the agreement. It was a short conversation and worth it.