1)Does it cost?
2)If not, then I am stuck 'cause the pass in the Email isn't working. I get a new pass by E-mail but it says It is not on(I am using my forum Email), what shall I do????
The fact that you ask whether it cost would suggest you may not have purchased vBulletin. Once you have bought vBulletin, you will get a license number and password. Use that to get licensed here.