Hello Aspirant,
Right now you are 20+ years old and according to your age you are eligible for all the CDS 2022 courses so you can appear for CDS 2 2022 and for your reference the age criteria for different courses is mentioned below :-
>> Indian Military Academy - 19 to 24 years
>> Indian Naval Academy - 19 to 24 years
>> Air Force Academy - 20 to 24 years
>> Officers' Training Academy (Men) - 19 to 25 years
>> Officers Training Academy (Women, Non-Technical) - 19 to 25 years

Apart from the age criteria there are some other parameters upon which your eligibility will be determined like your educational qualification which goes like :-

**Indian Military Academy - Bachelor's Degree from a recognised University or equivalent institute
**Indian Naval Academy - Bachelor's Degree in Engineering from a recognised University/ College
**Air Force Academy - Bachelor's Degree from a recognised University (with Physics and Mathematics at 10+2 level) or Bachelor degree in engineering
**OTA (Men) - Bachelor's Degree from a recognised University or equivalent institute
**OTA (Women - Non-Technical) - Bachelor's Degree from a recognised University or equivalent institute

For detailed eligibility criteria kindly check out the link given below :-
https://competition.careers360.com/articles/cds-eligibility-criteria

I hope this information helps you.
Good Luck!!