What will happen to my 10 yr multiple entry tourist visa after abandoning change of status to F1?

If you leave while it is pending you should be OK by explaining your actions later on if questioned and presenting appropriate documents.

Do I have to send my DS-260 with postal service to U.S. embassy or I have to fill that in the web site?

It sounds like they gave you specific instructions to follow, and so you should ask them again to be sure.

Can an order of protection prevent one from getting legalized in the US

It could cause issues. Please review everything with an attorney!

Can i overstay my B2 visa while my husband goes through naturalisation?

There is no way you can guarantee your husband will naturalize timely and you will not be deported. So you need to not ask over the k termet but...

I have tps and got my travel document . Can i enter us after i went to my country (syria)

you need to discuss this face to face with an attorney and hear appropriate warnings.

My parents are applying DS-260 and for child's status as I'm 26 and want to apply for grad school in future how should we reply?

If I understand it correctly you are too old to be included in your parents petition. Did you check the Child Status Protectiln Act? So I think...

I live in tn and my child's dad lives in ms.. If I fill out application in tn will I have to go to court in ms.

Please provide more info to clarify your question.

Your visa was H4. That is what you are putting on the form.

I am at the end of my rope: I need help with figuring out the status of my I-485 and also how get my EAD and AP renewed quickly.

So sorry about all this. Sometimes this happens but it cannot be reversed now. You need to consistently follow up with immigration to find the file...

What happens if the gov't finds out you lied in your immigration interview for conditional green card and at the Embassy?

Immigration fraud can get you placed in removal proceedings and deported.