Get the finished/unfinished cases of a process from the API

Hello, thanks for reading. I've been searching for a while and i still haven't found the solution to my problem: i want Bonita to let me know how many cases were finished and how many were not (completed vs no completed) from the API, i know i can access this information from the Portal but i need to get it from the API. ¿Is there an endpoint that can provide this kind of information? Thanks.