Hi, I'm John! I will help you with this.
Since you’re already on the latest updates and your PC meets the requirements, you’re in good shape.
The ESU enrollment option is rolling out in phases, so if you don’t see it yet, it should appear soon in Settings > Update & Security > Windows Update. When it shows up, you’ll see a link to enroll, and you can choose between the free Windows Backup option, redeeming Microsoft Rewards points, or paying $30 for a year of coverage.
For more info please see https://www.microsoft.com/en-US/windows/end-of-support and find "Windows 10 Extended Security Updates (ESU)"
If the option isn’t showing yet, it’s just a matter of waiting for Microsoft to enable it on your device, every eligible PC will get it before support ends.
Should you need further information please let me know.
Click "Add comment" to let me know.
Regards,
John J.D.