Uma (उमा) is one of the names of the Hindu goddess Parvati — wife of Shiva, mother of Ganesha and Karttikeya, goddess of fertility, love, devotion, and divine power. 1 (2003) and Vol. Uma da Cunha — Indian film historian. Uma Devi Khatri (1923-2003) — Bollywood playback singer.
Uma 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 Uma reduce to 8, The Visionary. This is a traditional interpretive system, not a factual claim about the name.