Praise be to Allah, the Lord of the Worlds; and may His blessings and peace be upon our Prophet Muhammad and upon all his Family and Companions.
Fiqh in Shariah is the knowledge of the practical Islamic jurisprudence rulings derived from its evidences in great details, such as the Fiqh of acts of worship, the Fiqh of transactions (dealings with one another) Fiqh of obligations, marriages and so on.
Allah knows best.