Maybe. Depends on the information you put in the supplementing declaration.

I'm asking for my son's residence, is his status going to change from F2B to F3 when he become a dad?

No, but if he marries before you become a citizen, his visa category will terminate.

H4 EAD, after spouse I 140 is revoked by previous employer

According to my understanding of the USCIS guidance, the EAD should continue being valid until it expires.

I-212 and i-601 waivers: How difficult are they to get approved?

If you can establish extreme hardship you can succeed with ease. The probalm is to manage to establish hardship.

Can I apply for citizenship with one resolved criminal case?

You should be able to, perhaps. Take your criminal record to an immigration lawyer in your state for a more specific assessment.

Can the i-765 form be filled without any charges?

the I485 fees covers the I765 processing so you need not pay any separate fees.

How can i edit in the i-754 ?

Your category is indeed c8 and you are not an applicator but an applicant for asylum.

NVC communication letters are very instructive on these issues. Just review them carefully. You can also call the NVC.

No, in terms of your legal ability to sponsor them. yes, if your income is not sufficient and you need a co sponsor. That would be true even if you...

Can I travel on tourist visa

You might be able to apply for a visa, yes and if issued, travel to the USA.