The authors conduct a systematic and comprehensive study of evaluative concepts and categories in jurisprudence, their legal nature, essence, peculiarities of construction, interpretation and application.This publication contains a summary of the main issues concerning the definition of the concept and disclosure of the essence of valuation categories by establishing their attributive features; establishing the purpose and functions of the legal valuation categories; considering the grounds for the classification of valuation categories in law; identifying the specific features of the process of interpretation and specification of valuation categories; researching discretion in the application of legal rules with valuation categories, identifying the features of private and judicial The study contains conclusions and suggestions that can be used in scientific research and law enforcement practice.The book is addressed to legal scholars, teachers, students, bachelors and masters, civil servants of public authorities.