Right-click your RAR file and select "Extract Here."

Which you are using (Windows, macOS, or Linux). I need help to convert rar to zip on windows or mac?

: Because archives can be corrupted during transit, "top" users often employ NSC_Builder Switch Backup Manager

In the Nintendo Switch modding scene, "converting RAR to NSP" is a misnomer; you aren't actually transforming the file data, but rather the installable Nintendo Submission Package (.nsp) from a compressed archive.