Dana is the English feminine of Daniel — from the Hebrew Daniyyel ("God is my judge") — used as a unisex name in 20th-century America. Dana Carvey is male. Dana Loesch — American political commentator. Dana Scully — covered separately under Gillian Anderson (Scully's first name was Dana Katherine Scully).
Dana 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 Dana reduce to 2, The Peacemaker. This is a traditional interpretive system, not a factual claim about the name.