Had one bump on my lip line in 2019. it never showed up before or again but it did leave a scar.i think it was a pimple because it didnt feel or look like a cold sore(pain,itchy) now im anxious if it was. i was wondering if you could tell by the scar?

Even if it was herpes cold sore, that is not a cause for concern. More than half of the world population has it. For info: https://www.who.int/news-room/fact-sheets/detail/herpes-simplex-virus#:~:text=An%20estimated%203.7%20billion%20people,that%20can%20recur%20over%20time. Get HPV vaccine. Wish you good health! Safe sex: https://www.hopkinsmedicine.org/health/wellness-and-prevention/safer-sex-gui