Question about Reinstalling OSX (back to high sierra)

1- I only have 1 license for this computer, how does this work so I can download and start using Parallels right away with my new OSX High Sierra?
2- Would I be able to make it work in that OSX?

Thanks!

 

Hello, please check this KB article for more info about moving Parallels Desktop to your new Mac.
And please let us know if you have any additional questions.