Do you have the full context? It could change depending on how it's written. :)
Normally, an "intrinsic end" is a goal that is good or important by itself, not because it helps you get something else.
For example:
If you study because you love learning, then learning is an intrinsic end.
If you study only to get a good job, learning is not the main goal—getting the job is.
To make each part simpler:
Intrinsic: Something natural or part of something (in this sentence, it's a natural part of you!)
End here means: A goal or purpose.
So, an intrinsic end is something you want or value just for itself.
I hope that helps! Please let me know if you have any questions :)