hello , I am a new user and I have one simple question :
can I use my recently bought license on 2 computers?
Hey Pavel4… welcome! 
You did not state what version of Cubase you have. Some versions have the license stored on the computer (soft-eLicense) and some versions store the license on a USB dongle.
If your Cubase license is on the computer then that is the only computer where it will work. If your license is on a USB dongle then you can use Cubase on the computer where you plug the USB dongle to.
Regards 
In addition to the relevant points mentioned by Prock, the short answer is no. Whether a soft e-license (which is bound to a single computer) or a dongle (USB e-Licenser) which may be moved freely between any number of computers; unless you purchased more than one license, you can only use it on 1 computer at a time even if you have 2 e-Licensers (You can only have the purchased Cubase license on one USB e-Licenser at a time as well)
Unless of course, you purchase more than one license.