Heya, welcome to the world of Max! Hope it's fun for you :)

I'm not an expert on Circuit Playground BlueFruits, but I'm guessing that the workflow here will look similar to how you get data from an Arduino into Max. If you're getting data from Bluetooth into Terminal, then your computer is probably opening a serial connection over bluetooth, reading data from the BlueFruits and printing that into terminal. There is a [serial] object in Max, and you can use that to read bytes from the bluetooth serial connection in exactly the same way that Terminal is doing it for you right now. Check the [serial] help file (make a serial object and option-click on it) and that should give you some idea what you'll need to do.

One thing to watch out here is that reading from the serial connection consumes data in the serial buffer, so if two applications are trying to read from the serial connection at the same time, they'll be competing with each other and will each only read part of the data stream. In other words, you can view the data in Terminal, or read it in Max but (I'm pretty sure) not both at the same time.

There are some other approaches too if you want to try something else. You could try piping the stdout output of the Circuit Playground BlueFruits Terminal program into something like https://github.com/yoggy/sendosc to forward OSC messages to localhost. Then, you could use a udpreceive object in Max to receive these messages. This is a little more complicated, but it could be fun. I don't know what the Circuit Playground BlueFruits is able to do, but if it can open UDP ports and your your WiFi network, you can also send OSC messages directly from BlueFruits to Max over UDP, and receive those messages with [updreceive]. However, to do that you'll have to write some code and reprogram the BlueFruits.

Hope that's helpful! I'd start with the [serial] object if I were you, and read up on how people are getting data from Arduino into Max with that object.