Question of the license?

I am interested in what is fixed license: to the person who buys or computer which will work. And on how many machines you can work if you buy one lizenziyu?

Maybe you can find information here : Unity Terms of Service

“Copies. If you have licensed a version of the Software other than a trial version and you are an individual or a Legal Entity other than an educational or academic institution, you may install the Software on both a primary computer and a secondary computer, solely for your convenience, but only for use by a single person. You may make a single copy of the Software solely for backup or archival purposes. We may in our sole discretion authorize you to install the Software on an additional computer or computers.”

1 licence = 2 computers