Thank you all for the help, I have finished my project. I know RSSI signals are not very precise but at the final I did the read of the signals and made a table with the values into meters.
So, I only wrote the table on the LCD Display and that's it. Now when I ask for "AT+INQ", I get an address, a type of device and the RSSI. Just see the LCD Display and compare the Serial Monitor result with the table I can read from the LCD.