The Pipboy 3000
Stats
On the stats category it has 5 screens the Status, S.P.E.C.I.A.L, Skills, Perks, and the General screens.
Status
On the status screen, It shows your level, HP, AP, and XP. It shows you your stim-packs and doctors bags, it also has shortcuts to use them. It shows your CND which shows your limbs and their health. It shows your RAD which has your RAD resistence and your RAD.
S.P.E.C.I.A.L
On the S.P.E.C.I.A.L screen it shows your attributes for:
Strength
Perception
Endurance
Charisma
Intelligence
Agility and
Luck.
Skills
On the skills screen it shows all of your skills like Barter, Energy Weapons, Explosives, Guns, Lockpick, etc..
Perks
On the perks screen it shows the perks you chose like Comprehension, Enhanced Sensors, Fortune Finder, Scribe Assisstant, Scrounger, Swift Learner, etc..
General
All I've seen General do is show a group of people and show your reputation with them.