Policarpa combines the Greek poly (much) and karpos (fruit) — "much fruit." Policarpa Salavarrieta (1795-1817) — known as "La Pola" — was the Colombian seamstress-spy of the independence movement, gathering intelligence from Spanish officers whose uniforms she sewed.
Policarpa 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 Policarpa reduce to 1, The Leader. This is a traditional interpretive system, not a factual claim about the name.