Ubuntu 20.04.3 LTS - Xorg remote connection refused on port 6000

I'm having this error when I try connect (Windows >> Ubuntu).

connection refused on port 6000

I have no idea how to configure Xorg to accept connections on port 6000.

/usr/bin/X

#!/bin/sh
#
# Execute Xorg.wrap if it exists otherwise execute Xorg directly.
# This allows distros to put the suid wrapper in a separate package.

basedir=/usr/lib/xorg
if [ -x "$basedir"/Xorg.wrap ]; then
        exec "$basedir"/Xorg.wrap "$@" -listen tcp
else
        exec "$basedir"/Xorg "$@" -listen tcp
fi

/etc/X11/xinit/xserverrc

#!/bin/sh

exec /usr/bin/X -listen tcp "$@"

/etc/gdm3/custom.conf

# GDM configuration storage
#
# See /usr/share/gdm/gdm.schemas for a list of available options.

[daemon]
# Uncomment the line below to force the login screen to use Xorg
#WaylandEnable=false

# Enabling automatic login
#  AutomaticLoginEnable = true
#  AutomaticLogin = user1

# Enabling timed login
#  TimedLoginEnable = true
#  TimedLogin = user1
#  TimedLoginDelay = 10

[security]
ServerArguments=-listen tcp

[xdmcp]
DisallowTCP=false

[chooser]

[debug]
# Uncomment the line below to turn on debugging
# More verbose logs
# Additionally lets the X server dump core if it crashes
#Enable=true

nmap scan

Nmap scan report for localhost (127.0.0.1)
Host is up (0.00023s latency).

PORT     STATE  SERVICE
6000/tcp closed X11

i also tried use xhost + and xhost 192.168.0.101 but seems not working. :(

UPDATE

i opened port 6000 stopping gdm3 and start Xorg Xorg :0 -ac -listen tcpbut now i dont have graphic interface.

i tried all consoles "ctrl+alt+"