So far this has been the most challenging task to complete, the first success was sending the information through a COM port from the Unity in the computer to Arduino.
Once the build was in the tablet accessing the bluetooth was a big problem since I never coded in javascript or used any of the Android libraries.
After using the Unity asset I was able to start a communication through bluetooth, but after sending the information I experienced data loss, Arduino was not receiving all the information.
We investigated if it was a hardware problem but after the tests and my experience from other Arduino projects we determined that the hardware was fine.
Finally sending the information as a long string and then let the arduino split it worked the fine and no data loss is experienced.