In regards to availability to PHP 5.6 or PHP 7.0 the nulling process doesn't affect the software's native PHP compatibility. If there is any question whether or not a host is able to support vbulletin, you should contact your host. Mind you, using nulled software does go against anti-piracy laws and your host will not assist you if you are caught using nulled software.
Ok. Everything is clear. Thanks for answer. :( I go to search next vbulletin nulled version