How to create a rule or VBA code for Outlook to copy the the messages from specific folder to another folder?

Question

I am looking solution to the following problem:

There is a mailbox for the requests from the customers with 7 clients that filtering the incoming e-mail from general "Inbox" to the different folders manually.

Let's say to the folders A, B and C with regard to the relevance of request. After that, the employees process the letter and move them to folder X or delete them.

I need to find: the number of e-mails that were ever moved to the folder A for the reporting purposes. Not the actual one but the historical.

My idea: as far as I am looking for the solution that is relatively easy to implement I thought somehow to make a rule or VBA code to copy every letter that comes to the folder A to the new order X or alternatively to another mailbox.

Would very happy to hear the ideas of others or suggestion how to implement my idea.