How to add score in LMS from external project which was not in the LMS

How to add score from external project which was not in the LMS, but this project was based on to the course which we have created in LMS, so here the requirement is to store scores of that external project of all employees against this course which was in LMS.

Let's take a scenario One Employee had completed a course "A" and we have asked him to do a project based on that course.

Employee has been assigned 8/10 in that external project which is not in our LMS.

So now our requirement is to store the score of this external project into our course"A" which is in our LMS.