Ronit is from the Hebrew רוֹנִית (Rōnīt — joyful song, joy) — from Hebrew rōn (song of joy). Ronit is one of the Hebrew feminine names — central to traditional Israeli heritage.
Ronit 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 Ronit reduce to 4, The Builder. This is a traditional interpretive system, not a factual claim about the name.