The general historical consensus is that Jesus existed. Plenty in our FAQ about this: https://www.reddit.com/r/AskHistorians/wiki/faq/religion#wiki_christianity

More answers are always appreciated, but the FAQ has several very good synopses of what we historically know about Jesus (especially by /u/talondearg, /u/koine_lingua, and /u/Celebreth).

Holy shit balls. I did not expect that link to be so thorough