Vidushi is from the Sanskrit vidūṣī (learned woman, scholar) — feminine form of vidvān. Vidushi in Indian classical music is the honorific title conferred on female Hindustani classical performers of exceptional accomplishment — the feminine counterpart to Pandit (Hindu) and Ustad (Muslim) male honorifics. Rajam (Hindustani violinist, Padma Vibhushan).
Vidushi 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.
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In Pythagorean numerology the letters of Vidushi reduce to 2, The Peacemaker. This is a traditional interpretive system, not a factual claim about the name.