Download file tar.gz from the page https://code.visualstudio.com/Download and install with the following commands
sudo pacman -S electron
cd /opt
mv ~/Downloads/Firefox/code-*.tar.gz .
tar -xf code-*.tar.gz
rm code-*.tar.gz
cd ~
ln -s /opt/VSCode-linux-x64/bin/code /usr/bin/Or install with yay
yay -S visual-studio-code-bin