Showing the Location of Vault 75 and the Science Bobblehead. Not Commented, fights cut out.
Science Bobblehead at 8:53 in the Lab.
Vault 75 is in the basement of Malden Middle School.
To activate the Bobbleheads they need to be on a BOBBLEHEAD STAND that you have to build in any of your settlements. FURNITURE - MISCELLANEOUS - BOBBLEHEAD STAND. Place the bobblehead onto the stand with the Transfer button (Square on PS4).