From within your VM:
cd /vagrant/YOURREPO (note that YOURREPO will vary depending on the name of your repository).sh scripts/palview.sh. Alternatively you can copy the script from your repository and paste it in the scripts folder in your shared repository. If you have more than one editing repository in your VM, it is recommended you rename it something obvious. You can then just run that file name in the terminal from anywhere.hmt-mom/build/paleography/viewer.html which can be found in your shared folder.