Chaps today i was able to check my tyre pressures on my 20" BBS wheels for the first time. Is 32psi front and 30psi rear does that sound ok?

I had to let air out of 3 tyres, one is low and needs air however my little air pump does not fit the valve adapters, it has a screw on fitting, is there a way i can get my screw on air pump to fit or do i need to find a garage for this? Am i likely to have problem going to some garages for air?