Wioletta is from the Polish Wioletta — Polish rendition of Violet (from the Latin viola — violet flower). Wioletta is one of the Polish feminine flower names of the late 20th + 21st century.
Wioletta 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 Wioletta reduce to 6, The Nurturer. This is a traditional interpretive system, not a factual claim about the name.