First I want to thank all the members of this forum for their contributions because without them it would have been impossible to carry out this project.
I decided to use a raspberry pi3 I had at home, but I assure you that in future projects I will use a Gameboy zero

I spent hours reading and seeing images of gameboy constructions, I liked banjokazooie projects, especially their order and cleaning, so mine is quite similar in distribution of components.
In my construction, all components are screwed, can be disassembled if needed, I have used very little Hot glue.
If anyone wants the list of components I put it here, but are "typical".
After a few weeks of hard work, I finally have my gameboy finished.
Mod case:
Amazon screen rear camera modified to 5V and hoolyloo's bracket with epoxy to case
Buttons connected via FPC to arcade USB decoder: