i think there should be an vbulletin auto install, i know you need an license for it but it would be like the whmcs auto install where you need to enter an vaild key to install it
Sir we had contacted the vBulletin team for adding it to Softaculous but they do not permit us to add it so we could not add it.
It would be great if you could have a word with them and ask them if they allow us to add it. They might allow if a user wants it.