Prince princess in same pot. Do I separate them when plant now they are touching
There is nothing wrong with planting them together. Many growers sell them in just the same way you purchased.
how much space should I leave between the 2 I am planting? I do not intend on pruning as I am using as a hedge....
Space multiple Hollies 5 feet apart.
I cut the shrub back? Should I cut the branches back as most have green leaves and the holly seems to still be alive?
It would appear that you are just outside of their native region. Without winter protection during the colder parts of the year, it can kill off much of the growth. Sometimes it will be killed all the way back to the ground. I would make sure to give plenty of protection in winter, such as mulching, and wrapping the tree in burlap during the night.
You can safely cut out any dead growth. This will help promote new growth.
scrawny? The blue princess is doing OK, The blue prince has gotten taller and is still scrawny although by the look of the princess is doing his job. I have put on Dr. Earth and Holly tone, Do I need more? Should I replace the dirt? The roots seem to want to grow to the top. Can I transplant to a southern exposure but the sun may be too intense. I leave in North Royalton OHIO about 15 miles from Lake Erie.
Unfortunately, your photo did not come through. I am unable to see the state of the shrub.They are shade tolerant, but too much shade will slow growth and cause lankiness.
The first thing that you might want to do is to test your soil for pH issues, and nutrient imbalances. These articles will help:
Here is an article that will help you to understand the care requirements for the shrub: