Hi Broke Degen
Welcome to the forums, Some questions like these can be answered in the
FAQ or
Theres a thread for smaller question.
But as you are new to the forums ill give you an answer here. BB/100 is Big Bet per 100 hands. A Big Bet is 2big Blinds.
So lets assume you are playing 0.05c/0.10c poker,
1bb=10c
1BB=2bb
so
1BB=20c.
So if you are winning at 1BB you'd be winning 20c every 100 hands.
The 500 hand sample is meaningless. To get a more realistic winrate you are going to need a hand sample of around 10k hands with some people saying you'll need 50k hands
