I reset my phone and now I want to recover my electrum wallet
I have the same exact problem.
I think he is talking about wallet.dat in electrum with windows OS
We can only guess what he thinks, but it is obvious that he asked his question in thread which is open regarding an phone ( Android version ) of Electrum, he say that he have exact problem. It's actually easy to locate Electrum folder in Windows OS, it is explained on Electrum help page - but for Android version it is not so simple.
I hope TalkBitcoinsCom may be a bit more precise so that we can be sure what is it exactly about, Windows OS or Android version of Electrum.