Create the -prj folder to extract the contains of QVW file.
In the folder you will see dozens of XML files other files, text script file for standard script and binnary file that contains encrypted hidden script. Open this bin in hex and check how strong was password, if it several digits up to 3 than you will see simple numbered structured encryption and you could google how to handle that. If you see much complex bin structures containing amounts of symbols, numbers, letters etc., then password was strong. If I find the time I can try to detect the roots of encryption algorithm, pretty sure it's smth standard. So, if you are lucky and password is simple you could get script extracted. Several years ago we did that thing when realized that after infra failure we have only one file with script that is hidden and password gone with infra failure