Najwa (نجوى) is the Arabic word for "a confidential conversation" or "intimate whisper." The word appears in the Quran referring to private prayer with God.
Najwa Karam (born 1966) is the Lebanese singer; Najwa Nimri is the Spanish-Jordanian actress.
Najwa 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 Najwa reduce to 4, The Builder. This is a traditional interpretive system, not a factual claim about the name.