If you do not know anything about password and your seed then nothing can be done in this case, your best chance is to try find password or seed. You probably wrote them somewhere, and maybe you use same password for other wallets/sites. Try to remember how many characters was in the password, maybe it can be done by brute force if it's a short and simple password.

You can check this tool : https://github.com/gurnec/btcrecover