Dear candidate

No, it doesn't effect your college application if you didn't do anything in quarantine because it is your wish whether to do something or learn something, and if you have learned something during quarantine you will have a new qualification and knowledge that's it and its just your personal interest whether to learn or do anything or not.

Hope this Information is helpful

If you did not do anything extra ordinary then it should not affect your college application. But yes, if you did something extraordinary thing during this lockdown, then it will definitely boost your resume for any college application. However, if have done something other than the daily routine, then it will not only boost your college application but you must have learnt something new from that.

Hope it helps.