Thank you so much for the quick anwser:
I do not really have documentation from the Bluetooth Speaker Manufacturer.
The other options that I have been trying to use is a sound found in a streaming web, I have found some libraries that allow it, but what I do not achieve is that the ESP32 connects ...

I have acquired the ESP32 with the idea of activating the sound reproduction on a bluetooth device which already contains the sound files. In many web sites there are examples but they are based on playing a file that are in ESP32.
In my case what I need is to link the ESP32 with a Bluetooth Speaker ...