Layoff notice, what does the 60 days mean? - first time posting

Our team was told about a closure date that is 17 weeks away. I worked as a line cook before this. I do not know if I should start looking now or wait for severance news. Has anyone been through this?

I stayed for the retention bonus and looked for work on the side. It cushioned the gap.

Start your search early. I wish I had begun the day of the notice.