Did you just attempt to install with:
apt-get -yqq update; apt-get -yqq upgrade; apt-get -yqq install git lsb-release; \
git clone --recursive https://github.com/QuickBox/QuickBox QuickBox
I just installed the script for a user on Ubuntu 16.04 and there were zero issues. Only expressing it as details details details.
bc package fails it is an indicator that the dependencies tree has failed entirely, so naturally anything that comes after would fail. The problem we found as of two days ago (updated since) was that there was an included package in the script that was breaking all the following installs. To be exact it was:
which is not needed on Ubuntu installations.
I have time at the moment... meaning I could login to your machine and take a look. Just PM me if you're game.
Resolved after login via PM