This question already has an answer here:
If one foot's cleat wears quicker than the other due to riding style, is it a good idea to switch them after a certain time to extend the lifetime of the pair?
This question has been asked before and already has an answer. If those answers do not fully address your question, please ask a new question.
I see from your other question that they're Look Keos.
As they're plastic, they're going to ware quicker than a metal cleat, and yes, you could swap them around.
However, I think a better strategy might well be to replace them one at a time as they wear out.
Plastic stuff doesn't really like being repeatably removed and reattached in most situations and you need to keep them in the correct positions, etc. etc.