The curl https://get.volta.sh | bash command fails with 404 Not Found error message if OpenSSL 3.0.0 is installed on Ubuntu.
I uninstalled OpenSSL 3.0.0 and the Volta installation succeeded.
The error message from the failed install was strange, it should be caught in https://github.com/volta-cli/volta/blob/main/dev/unix/volta-install.sh#L353 when you parse the openssl_version or in the parse_os_info method.
The fetching archive for Ubuntu shows release 0.9.2 the current release of Volta. So it took some time for me to figure out why the install failed.