There is a feature Visitor Counter on RVsitebuilder version 5. But since cPanel has cancelled cPanel x3 theme and deprecated the CGI Center (Software/Services > CGI Center icon) ,  this will affect to feature Visitor Counter on RVsitebuilder.

RVSItebuilder Development team is deeply sorry to tell that the Visitor Counter feature will doesn’t work on RVsitebuilder anymore.

We suggest to use the open source script instead.

Reference: https://documentation.cpanel.net/display/64Docs/Edit+a+Package
Warning:
The CGI Center interface (Home >> Software and Services >> CGI Center) only exists in cPanel's deprecated x3 theme. You cannot create new CGI scripts with cPanel's current theme (Paper Lantern), and we strongly discourage the use of the x3 theme.