Is it possible to appeal a rejected run?

Why was the run rejected?

Yes, but if the run was rejected for a good reason, then the appeal will still be rejected

I need to know if is possible to appeal a rejected run if I submitted in future

not sure if there is an actual method marked to "appeal a rejected run", but essentialy the run should be accepted as long as it is legal and the submission follows all the requirements if it is rejected, it will be marked why was it, and there is a pretty low chance that the run will be unrejected if it was rejected in first place anyhow, if you are completly convinced a run was rejected for a false reason by an error, best prob would be just resubmitting it a 2nd time