Firstly you be have to update all your extensions, the  check that you already have the ADB if not, get it here: LINK

then make sure to enable developer options …

now Install the ADB Commands for VSCode extension

you have to make sure that you add the ADB to your system Environment variables by following these steps:

start typing ” envir..“ in Cortana search box and click over-edit the system Environment variables

now click over “ Environment variables”

select the path and hit Edit

now you have to add the path correctly to the platform-tools

in my case it’s

C:\Users\Hp\AppData\Local\Android\sdk\platform-tools

Click “New” and add the path you copied.

Now you must enable USB debugging in your device.

to do so, 

1. Navigate to Settings > About Phone > scroll to the bottom > tap Build number seven (7) times. You’ll get a short pop-up in the lower area of your display saying that you’re now a developer.

2. Go back and now access the Developer options menu, check ‘USB debugging’ and click OK on the prompt

in the VScode hit Ctrl+shift+p and select

ADB::Connect to device IP

To find your phone’s IP address, go to Settings > About device > Status.

or hit IP in the setting search box because it depends on your phone brand

Note That :

fist you may have to connect your phone via USB then after everything is done you can unplug it

ALTERNATIVELY:

you can connect your phone without any extension simply by following these steps :

1. plug your phone via USB.

2. open your vs terminal ( you can open the terminal using Ctrl+ `)

adb tcpip 1031[your phone port]

adb connect [YOUR_IP_address]

3. unplug your phone and enjoy.

Bonus :

you can display and control android devices and mirror them entirely to your pc using totally free, a lightweight tool called Scrcpy

it’s super easy to install and use.

you can download it directly from their Github page :

https://github.com/Genymobile/scrcpy