Navleen is from the Punjabi Navleen — nav new + leen absorbed/immersed — always absorbed in God, newly devoted. Navleen is one of the Punjabi feminine + unisex names — central to traditional Sikh devotional heritage. Punjabi feminine name reflecting Sikh devotional heritage.
Navleen 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.
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In Pythagorean numerology the letters of Navleen reduce to 1, The Leader. This is a traditional interpretive system, not a factual claim about the name.