It’s possible to edit the siderbar menu? for example adding social under pages or logo on top?
You question is a little vague. Details, and images, a link or video can help.
Check mobile version of this website: http://www.studioecp.it/, it opens the same menù bar of desktop version.
On mine website I have only black background with pages list
You will have to take a different approach to build something similar to that then using the Blocs built in menu.
It is possible to create, but thats not often within the scope of the free help you get in this forum. Everyone here volunteers their time to help.
On blocs sidebar menu I want only to add logo on top, it’s possible?
EDIT: I did this, thanks!