Bích (碧) is the Vietnamese word for "jade green" — the precious blue-green of nephrite jade. From the same Chinese root.
Bích is widely used in Vietnam.
Bích does not currently appear in the US Social Security Administration's top 1,000 girls' names, so we don't publish a US rank or birth count for it. That says nothing about the name's standing elsewhere in the world — only that it sits outside the ranked US data we rely on.
In Pythagorean numerology the letters of Bích reduce to 1, The Leader. This is a traditional interpretive system, not a factual claim about the name.