Will someone be deported if someone call the immaigraction on them?

People can certainly call immigration. However, it does not mean investigation will take place. ICE and USCIS are bureaucratic agencies. It takes a...

My wife wants to divorce me and we are separate. Can I apply for a green card?

I believe it is trying to commit a fraud, especially since you said "pay her money."

Asylum

You can contact your local asylum office by phone and explain the situation. They will look it up in their computers.

Can I apply for Canada visa from us

This forum is for US attorneys only.

Go to the interview. Then, prove your status to them.

I am a permanent t resident I'm engaged and want to marry him in United States after how long will it take for him ti be legal?

I would say become a US citizen first, then marry him. Yes, it would be a problem since you only have a green card, and he is here on B2 visa.

Does getting married to a gc holder impact current F1 visa?

I would say "Yes." because it would signal to USCIS that you would not want to leave USA anyway.

Can I change my status F1(it will expire in middle of June) to B or J1?

Technically, you can. I would do it with the help of attorney since being denied often occurs when people do it by themselves.

Im a green card holder getting married in a week. If I am pregnant will it make the green card process faster for my spouse?

Being pregnant does not put you in any category.

You should assume it is still valid if you never overstayed, and the visa has never been canceled.