Zubaida (زبيدة) is the Arabic word for "cream of milk" — meaning the finest essence. Queen Zubaida (763-831) was the powerful wife of Caliph Harun al-Rashid of Baghdad — built the Darb Zubaida pilgrimage road from Iraq to Mecca.
Mentioned throughout One Thousand and One Nights.
Zubaida 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 Zubaida reduce to 1, The Leader. This is a traditional interpretive system, not a factual claim about the name.