Bituin is the Tagalog word for "star." Used as a feminine name in the Philippines.
Bituin Escalante (born 1979) is the Filipino singer.
Bituin 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 Bituin reduce to 3, The Communicator. This is a traditional interpretive system, not a factual claim about the name.