If you are worried about being slaughtered by higher level players in Fallout 76, you can rest assured. Players of 5 level or lower can not be killed in PvP.
PvP in Fallout 76 is optional but at least will be safeguarded during the beginning of the adventure. This is what he revealed Todd Howard revealed in an interview to Multiplayer.it.
In the interview, Todd Howard of Bethesda states that this feature could change before publication obviously. After all, what prevents people from creating a low-level character and remaining so only to be a nuisance, bypassing the basics of high-level players? We just have to wait for the publication of the game to learn more.