Got severance, how does it affect benefits? after 15 years as a hotel front-desk agent

I was offered severance of 15 weeks after being let go as a hotel front-desk agent and I am unsure how it affects benefits. I worked as a hotel front-desk agent before this. 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.