This fonts are authors' property, and are either shareware, demo versions or public domain. The licence mentioned above the download button is just an indication. Please look at the readme-files in the archives or check the indicated author's website for details, and contact him if in doubt. If no author/licence is indicated that's because we don't have information, that doesn't mean it's free.
COVID-SY Regular
Absolutely free but if you want to buy me a coffee
https://gum.co/qXwJJ
For more info
https://selcukyilmaz.com/covid-sy