Can A US Permanent Resident Green Card Holder Visit Australia Even Without An Australian US Visa?

US Green Card holders need a visa to enter Australia. The process is slow (averages 20 days) and there is very little customer care available. The call centre is trained to respond that the average processing time is 20 days. Its best not to buy your tickets till you have your visa.

I going to be marry to u.s green cardholder I. Studying in australia  I have student visa my nationality was indian I get any benefit in Australia

You s  green card holder can applied for perment residency of canda  what the processing time the application

It is difficult to answer your question, as it depends on a large number of factors.
By the way, about the visa. I’ve been traveling for 10 years and have never met such a good visa center as https://tnvisaexpert.com/k3-spouse-visa/ Thanks to them, I managed to get on flights many times, which, as it seemed to me, I couldn’t catch. Also, this visa center helped me update my visa. If you need to update or get a visa, then contact them!