What all does this software do?

As far as i understand it converts the guitar signal to midi in real time. Will it write out a sheet music score in real time as you play it ? Or does it just emulate the synth sounds? Do the sounds come with the program? Thanks

MG converts audio to midi. This midi signal can trig, just like a master keyboard, internal synths included in the software, third part synths plugins loaded in MG, or hardware synths through the midi output .
So you can send midi signal in real time in a score editor, through a daw, etc.

Ok , thanks. So the trial version , how long does the trial last? I mean , how long do i have to work with it?

It’s running as a trial forever but will block and wait for you to click a button every few minutes (JamO answer to the question)