When should I apply for removal of condition on green card? And what forms would I need?

You apply 90 days before 2 year anniversary and complete Form I751 with supporting documents and fees.

Submitted I485 and all supporting forms and evidence, but I forgot the "evidence of bonafide marriage". Will it be rejected?

If there is a request for evidence you can submit then or you can bring the evidence of marriage at time of interview.

What are some possible pathways to citizenship for this person?

Marriage based adjustment of status may be the best option given these circumstances.

What if I visit the US on my B1/B2 visa, and apply for asylum and it gets denied, will my B1/B2 visa be canceled?

If you apply for asylum after entering on a visitor visa, do not expect to be allowed reentry on that visa again.

Will giving my sister custody of my daughter make it easier for her to get an F1 visa?

No this should likely have little impact on her F1 eligibility.

If the H1B primary applicant is still in valid status at the time of applying, then you can do so.

Does driving into Canada count as sufficiently leaving the US when student visa expires?

Yes once you enter Canada you will have left the US.

What should I do after receiving an I-797c rejection letter with my i-130,I-485,i-765 and i -131?

You should resubmit with the correct application fee as the application is. It should be okay to be accepted.

I got a notice in the mail that I missed my biometrics appointment but I never received the appointment notice what can I do ?

Call USCIS to reschedule and request a new appointment.

We have a pending I-485. Can you please advise what dose this mean?

Consult with your retained counsel for case specific inquiries, not attorneys who know nothing about your case.