I had trouble finding documentation around this, so hopefully this instruction set will help others. Unfortunately, it has a lot of bad reviews and no instructions, this is because there is a slightly hidden step needed to assign Bluetooth to a com port in Windows 10. However, I wanted my daughter to be able to play with my project without monopolizing my phone, so I found the Bluetooth Serial Terminal app. Most projects and examples have you use the your cell phone because Bluetooth is ubiquitous on them.

You can easily connect it to an Arduino serial port and use Bluetooth to communicate with the Arduino as if it were connected through serial USB to a computer. Recently I have been using a HC 05 Bluetooth module connected to an Arduino and have found it incredibly useful.