"Waqas Sarwar" had answered this question in another post.
What's the max limit for document libraries in a Site Collection
There are no limit mentioned for number of list/library in a site collection but we can do a math and estimate how much we can create a web application.
Supported Limit for number Items in a content Database is 60 Million.
Supported limit for Number of Items in a List/library is 30 Million.
Now if we have a single site collection in a content database then we can 2 have List / Library with 30 Million items in each. Again you can cross that limit per depend upon your infrastructure.
Number of list ? library depend on the following factor:
How many Site collection in a single content database.
How many items in each list and library.
Performance of the SharePoint.
Another example: a single site collection in a content database, can have 60 list with 1 million items in each.
Below article is about the maximum number of lists in SharePoint, although it is talking about list, but I think it is useful to you:
Maximum number of lists in Sharepoint
As a result, you need to consider your own situation and then make a choice.