Pegah (پگاه) is the Persian word for "dawn" or "daybreak" — a poetic Iranian feminine name.
Used widely in modern Iran.
Pegah 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 Pegah reduce to 1, The Leader. This is a traditional interpretive system, not a factual claim about the name.