If someone who has the shingles really bad more then once or twice. they catch herpes does that also make the cold sore worse too.

Shingles & cold sore: Shingles is caused by varicella zoster virus, cold sores by herpes simplex viruses. Even though they are in the same family, they aren't same, you can't catch one from the other. However, if a person's immune system is not functioning properly due to illness/medications, they are more likely to get eruptions of both shingles and cold sores because these are usually kept in check by immune system.