The instructions read 

"You were subject to federal, state or local quarantine or isolation order related to COVID 19"

Does that mean when my county went into lockdown back in March/April for 3 weeks, those self employed people that didnt work during that time would qualify for this?

I broke the lockdown and came to work anyhow (I could quarantine here alone in my office just the same as at home), so it doesnt apply to me, but Im sure some SE people didnt leave their homes during that time and couldnt go do their job.