If you want a verified account on the Fediverse, it works on a self-service system based around having a website. The verification confirms that you are the owner of the site, and the site on your profile turns green when it's verified. For example, the account @libreoffice has a green verified link to its website libreoffice.org.
You can find out how to verify your account here:
➡️ https://fedi.tips/how-do-i-verify-my-account
The guide also contains troubleshooting tips if you can't get it to work.
How do I verify my account on Mastodon and the Fediverse? | Fedi.Tips – An Unofficial Guide to Mastodon and the Fediverse
An unofficial guide to using Mastodon and the Fediversefedi.tips
