It looks like you’re running macOS, Linux, or another Unix-like OS. To download Rustup and install Rust, run the following in your terminal, then follow the on-screen instructions. See “Other Installation Methods” if you are on Windows.
curl --proto '=https' --tlsv1.2 -sSf https://sh.rustup.rs | sh
Get the latest version of Rust by running rustup update.