# Method 1:
wget https://packages.microsoft.com/repos/code/stable/deb/x64/code_1.74.3-1623748487_amd64.deb

sudo apt install ./code_1.74.3-1623748487_amd64.deb

# Method 2:

sudo apt update
sudo apt install software-properties-common apt-transport-https wget

wget -qO- https://packages.microsoft.com/keys/microsoft.asc | sudo apt-key add -

sudo add-apt-repository "deb [arch=amd64] https://packages.microsoft.com/repos/vscode stable main"

sudo apt update
sudo apt install code