Liya is from the Amharic ሊያ (Liya) — Ethiopian rendition of Hebrew Leah (לֵאָה — weary, also I am for him). Liya is one of the Ethiopian + Hebrew feminine names.
Liya 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 Liya reduce to 2, The Peacemaker. This is a traditional interpretive system, not a factual claim about the name.