Sign up for ESU by selecting Update & Security from the Settings menu. Click the "Enroll Now" sign-up link, as pictured below ...
Your Windows 10 laptop or desktop might not meet the requirements for upgrading to Windows 11, but you can still do it, and it likely won't cost anything.
Microsoft ends support for its older OS tomorrow, but there are three ways to extend critical security updates and remain on Windows 10 for another year. Two options are free.