I Forgot My Usb Password How Can I Unlock It Without Erasing The Files Inside.?

Well, unless you're a hacker, a computer forensic expert, or working for the company that made the device software, then you have no choice but to erase everything. I do find it a bit odd that you did not leave a username, and I don't see how someone could be that careless if the information is important. Anyway, who am I to judge.