Well, if it is mentioned that you will be able to host
Unlimited domains with the hosting package, you would be able to host as many domains as possible within the Resources i.e. Disk space, bandwidth etc. provided with the hosting package.
For example, if you get a hosting package with 1 GB disk space and you are able to accommodate 7 of your domains in 1 GB disk space, you will be able to host 7 domains with the hosting package. If you need to host more domains, you need to upgrade your hosting package to have more disk space so that you can host more domains.
Hope this clears the doubts
