Possibility of portal in WordPress

I know this is not the purpose of this support, but as you are always very attentive, I decided to take a chance...

By any chance, could you tell me if it is possible to create a type of portal, with a specific area for members/customers registered on a WordPress site?

What I managed to find so far was the possibility of creating a portal, with a members area for subscribers, for example, but in a generic way. That is, customer/subscriber X would have access to content from Y Z K in the premium plan, for example. However, the project would look something like this:

A law firm offers 3 solutions: environmental, tax and family. A client of the firm hires the environmental and tax solution. When accessing the portal (through login and password), the solutions he hired, the progress of his processes, etc., appear.

It is something more specific and personalized than simply a general content subscription service for everyone. I don't know if WordPress supports this type of proposal, simply through plugins.

As I said, I know that is not the purpose of this support. However, if you can tell me about the possibilities, either I would reject the proposal or I would try to go ahead with it.

Thank you so much for your usual support.