Jael (יָעֵל) is the Hebrew word for the mountain ibex or wild goat. In the Book of Judges (4–5), Jael is the Kenite woman who slew the Canaanite general Sisera by driving a tent peg through his temple — celebrated in the Song of Deborah.
Jael is widely used in Israel as Yael. Yael Stone (born 1985) is the Australian actress.
Jael 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 Jael reduce to 1, The Leader. This is a traditional interpretive system, not a factual claim about the name.