Hello Aspirant,

For NEET 2022, complete chapter wise wieghtage for each subject is described below :-

@Physics 
Physical-world and measurement-2%
Kinematics-3%
Laws of Motion-3%
Work, Energy and Power-4%
Motion of System of Particles and Rigid Body-5%
Gravitation-2%
Properties of Bulk Matter-3%
Thermodynamics-9%
Behaviour of Perfect Gas and Kinetic Theory-3%
Oscillation & Waves-3%
Electrostatics-9%
Current Electricity-8%
Magnetic Effect of Current & Magnetism-5%
Electromagnetic Induction & Alternating Current-8%
Electromagnetic Waves-5%
Optics-10%
Dual Nature of Matter and Radiation-6%
Atoms & Nuclei-3%
Electronic Devices-9%

@Chemistry

Basic Concepts of Chemistry-1%
Structure of Atom-2%
Classification of Elements & Periodicity in Properties-2%
Chemical Bonding and Molecular Structure-5%
States of Matter: Gases and Liquids-2%
Thermodynamics-8%
Equilibrium-6%
Redox Reactions-3%
s-Block Elements-2%
Some p-Block Elements-2%
Organic Chemistry: Basic Principles & Techniques-4%
Hydrocarbons-3%
Environmental Chemistry-2%
Solid State-2%
Solutions-5%
Electrochemistry-2%
Chemical Kinetics-3%
Surface Chemistry-2%
Isolation of Elements-2%
p-Block Elements-5%
d- and f-Block Elements-4%
Coordination Compounds-9%
Haloalkanes and Haloarenes-3%
Alcohols, Phenols and Ethers-4%
Aldehydes, Ketones and Carboxylic Acids-4%
Organic Compounds containing Nitrogen-2%
Biomolecules-3%
Polymers-3%
Chemistry in Everyday Life-2%

@Biology

Diversity of Living Organisms-14%
Structural Organisation in Plants & Animals-5%
Cell: Structure and Function-9%
Plant Physiology-6%
Human Physiology-20%
Reproduction-9%
Genetics and Evolution-18%
Biology and Human Welfare-9%
Biotechnology and its Applications-4%
Ecology and Environment-6%

For complete details about important chapters and other weightage related information kindly check out the links given below :-
https://medicine.careers360.com/articles/neet-chapter-wise-weightage-and-important-topics

You can also check out NEET Knockout package for your preparation :-
https://learn.careers360.com/knockout-neet-may
 
I hope this information helps you.
Good Luck!!