Open the Terimnal.app and run the following commands:
xcode-select --install
/bin/bash -c "$(curl -fsSL https://raw.githubusercontent.com/Homebrew/install/HEAD/install.sh)"
brew install --cask iterm2
Once you've installed iTerm2, you can use that as your default Terminal.
sh -c "$(curl -fsSL https://raw.githubusercontent.com/ohmyzsh/ohmyzsh/master/tools/install.sh)"
brew install git
https://code.visualstudio.com/
brew install --cask visual-studio-code
curl -o- https://raw.githubusercontent.com/nvm-sh/nvm/v0.40.3/install.sh | bash
brew install --cask gitkraken