Asking forum members to unlock a database is against forum guidelines
We have no way of knowing whether this application belongs to you or has been obtained illegally.
Whilst there are ways of removing various forms of Access security including 'unlocking the code', I'm not going to tell you how to do so.
What I will tell you is that the file is actually an MDE file (despite the MDB suffix)
That's why the VBA code is unviewable
There are specialist companies who can reverse engineer MDE files back to MDB files
For example, go to EverythingAccess.com
However they will only take on the task if you can prove ownership to their satisfaction and it will likely be expensive.
Good luck