I am a Canadian citizen, with permanent residence in US, with a 2 yr probation for misdemeanor, can I travel to Canada and back?

Some crimes may create inadmissibility grounds even if it is only a misdemeanor.

Renewing green card

Child support is a serious matter. You need to make sure it is resolved.

After filling i-130 and husband already in the US after enter illegally, do he have to go back to México? If he do how long?

he will need to you to seek a waiver for him.

I filed my i360 vawa case in Nov 2010 along with my EAD and i485 been that my husband is a citizen.

It should not take long now. Schedule an inforpass and ask them.

I have approval i 360 and i filed 485 (together with i 360) and do not have decision yet. How long time does it take?

I think talking to your attorneys would be best advice.

I leave USA E2 Visa for my medical surgery, I have valid B2 visa so can I go USA using my B2 visa? oe it has expired after chang

Yes you can, if both visas are valid.

What do i do now that i got an approval for my I-360 VAWA petition?

You wait until your I-485 is adjudicated. I am sure you have an attorney. Please direct the question to him or her. they know all the facts.

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Approved DACA (Deffered Action for Childhood Arrivals), will it do harm in the future?

Depends on how long you were illegally besides DACA and being under 18.

US citizen petitioning a sister that lives in Mexico

Congratulations to your sister. No. No affecting. Her husband will become eligible to immigrate too and kids if there are any.

How can this affect me when entering U.S. or Hong Kong? And how can this affect me in renewing my student visa and I-20?

Criminal records are never a good idea. It can always cause questions.