Hey

JEE Main 2022 syllabus comprises topics from NCERT Class 11 & Class 12 Physics, Chemistry and Mathematics topics.

Important Chapters

Physics-

Physics and Measurement

Work Energy and Power

Rotational Motion

Properties of Solids and Liquids

Kinetic theory of Gases

Electromagnetic Induction and Alternating currents

Communication Systems

Maths-

Sets, Relations and Functions

Complex numbers and quadratic equations

Matrices and Determinants

Permutations and combinations

Binomial theorem and its simple applications

Sequence and series

Limit , continuity and differentiability

Integral Calculus

Differential equations

Co-ordinate geometry

Three Dimensional Geometry

Vector Algebra

Statistics and Probability

Trigonometry

Mathematical reasoning

Chemistry-

Some basic concepts in chemistry

States of matter

Atomic Structure

Chemical Thermodynamics

Redox Reaction and Electrochemistry

General Principle and process of Isolation of metals

S - Block Elements (Alkali and Alkaline Earth Metals)

d - and f - BLOCK ELEMENTS

Co-ordination Compounds

Purification and Characterisation of Organic Compounds

Some Basic Principles of Organic Chemistry

Organic Compounds containing Halogens

Organic Compounds containing Oxygen

Chemistry in Everyday Life

Principles Related to Practical Chemistry

Chemical Bonding and Molecular Structure

Classification of Elements and Periodic table

You can get the important concepts from the chapters and the weightage of topics from the given link

https://www.google.com/amp/s/engineering.careers360.com/articles/jee-main-syllabus-weightage/amp

Hope this helps.