If you have an adapter available, try connecting the laptop to ethernet.

@JYDP1 Is that stuck at remote screen where you have to enter the credentials to login? If so, may try disabled the MFA and do the set up. 

Already connected to network.

Nope, it's just after entering credentials. 

You click on image, password, and just after, for the first opening of the session, i'm stucked on this.

Any chance you can share with us the preceding screen before you get stuck to help us better understand where exactly this is occurring? I'm not sure if you mean you're getting to the login window on a newly deployed Mac, or if this is occurring during the macOS Setup while enrolling  in your MDM via Apple Business/School Manager...

I can't upload image anymore. Anyway.

it's just after the main login screen, where you see images and name of users.