Please be aware that Ubuntu 20.04 LTS reached the end of it’s standard support some months ago now; 20.04 tells you it was released in 2020-April (what 20.04 means) and thus knowing when its 5 years of standard support should be easy to calculate (even when Canonical provide an extra month of support gratis).
This starting page on the Support and Help area says rather clearly (I feel)
ie. your mention of focal or 20.04 would make such a question off-topic if you’re seeking help. Ubuntu 20.04 or focal is now supported by Canonical, and not here on this Ubuntu community site.
Your post here, however is an introduction, and for sure you’re welcome to the Ubuntu community, so G’day (I’m aussie).
(Alas seeking help about 20.04/focal problems aren’t welcome though, but if using a later release within standard support now, seeking help would be appropriate)