What are the methods of protecting an Excel file?

Question

excel

I am writing a program for my needs, but I came across the fact that the software should be tested. Although I wouldn’t say that the VBA code used is too complicated or the principles of work are some kind of super, but I need a person far from IT (specifically construction), who could evaluate the software, identify shortcomings and generally test my alpha (and in the future, the finished result ) in the field. Because this market, within the framework of the task I am solving, is empty for automation, then in the limit I would like to bring it to sales or act as a freelancer.
The task is whether it is possible to protect, for free or for relatively little money (several thousand rubles), the file itself and the code (VBA) in such a way that the issued copy can work only on one device or run from only one Flash drive and not work after copying on other machines?

Answer 1

you can see how this one is made

Answer 2

You can just password
-protect www.spreadsheet1.com/vba-password.html
But this is unreliable, there is software that bypasses this.
And you also need to take into account this
www.spreadsheet1.com/read-document-vba.html
You can obfuscate the code
www.spreadsheet1.com/excel-vba-code-obfuscation.html
Or rewrite the code in VB6, VB.NET, C#.NET , VSTO, C++, Delphi.
And there are specialized solutions, but they are not free
www.spreadsheet1.com/unviewable-vba-project-app-fo...
And to the question of copyright, how can you register it in the backstage
www.spreadsheet1.com/how-to -build-a-custom-backsta...