Then your wallet would be as good as a sea which is full of water, but you can't drink that water. You can just watch your tokens lying there, and regret your decision of not saving the private key.
There is no option to recover your lost wallet passwords. There is no option like forgot your password. Your details are not saved anywhere, hence one must exercise a lot of caution when it comes to saving private keys.
This thing happened to a friend of mine she forgot her wallets password. I don't know how she bring it back but I think she did all she can to bring back her wallet because it is so important. after that I think she learned a lesson