Did I forgot to mention it requires pkgin in order to fetch the number of packages?! 🙁
If you haven't set-up pkgin open your ufetch file and replace line 12, that reads
packages="$(pkgin list | wc -l | sed -e 's/[ \t]*//')"
packages="$(cat /usr/pkg/bin | wc -l | sed -e 's/[ \t]*//')"
Now you should have more than 'zero' packages installed 😉