Hello there,
With 66% in your HSC exam, you may have a fair chance of getting admission to a B.Voc in Media and Communication, depending on the college's cutoffs and competition. It's advisable to apply and wait for the merit lists. If the first list doesnt work out, the second or third merit lists may give you a better chance, as cutoffs tend to drop slightly with each round. Make sure to have all required documents ready and consider applying to multiple colleges to increase your chances.

Hope it helps! Thankyou.