Looking for H1b/H4 drobox appoinment

I am currently in the US and planning to travel to India, I need to get my Visa stamped, I m getting an interview waiver but when I try to book an appointment there is not any appointment at all. Not even showing for any dates. I am looking for summer dates. Does anyone get a HIB dropbox appointment these days, how to check

I am also trying to schedule my visa and see no dropbox appointment since last few days in any of the VAC centers.