You have to specify in which competition
There are many things why Fijians are good in rugby. Rugby is considered to be a mans religion in Fiji and possibly women. It is just the nations game.
Fiji has never won the sevens world cup.
once in rugby sevens
No, the US has never won the Rugby World Cup.
World cup for fifa is enteirly different to Rugby. So the answer is ZERO.
In spite of having qualified for all seven Rugby World Cup tournaments to date, Romania have never won the Rugby World Cup.
twice
all six times
twice at time of answering(2012) 1991 and 1999
How many rugby teams is there the whole world?
Scotland have competed in all 7 Rugby World Cups to date. They were in 1987, 1991, 1995, 1999, 2003, 2007 and 2011. They will compete in the 2015 Rugby World Cup too.