any help
MultiBit classic used to have the option to export the private key in clear, I've done that myself many years ago.
However, if you've tried that address on a block explorer and it's empty, you may have moved your coins elsewhere.
As said, if you want help, ask in a place that's not under Archival and give more details, maybe the address (it's safe, but it's bad move for privacy) for look up.