I filed to petition my mother. I went to the interview today. I'm nervous with how it ended . Should i be worried?

No.

How long take to process I-130 form

Did you not even get a receipt notice? Processing times of petitions can vary depending on the status of the petitioner, the category of visa, and...

If my husband got arrested for speeding/reckless driving do I need to disclose this information when filing I-751?

You can consult with an attorney for a determination of the specifics of the traffic case, BUT to be safe you can disclose the arrest and then...

Is it fine to travel outside US for F1 with 20 days visa remaining upon their arrival ?

Travel with proof that you have registered, along with an endorsed I20

You should report it as it will speed up your process.

Is my daughter eligible for permanent residency or not she is 20 years and 6 months?

Your new spouse will be able to file petitions for any of your children who are under 18 years of age on the day you marry. Unfortunately, your 20...

I have permanent job with US employer who will sponsor me for CG . How can my wife legally enter US with me & work ?

I agree with my colleagues

You need an employer willing to hire you.

I agree with my colleagues - if the marriage has no issues, wait.

I , m a German married to an American . We got married 5 days later after I arrived in the U . S .

Possibly. Given your short stay before your marriage there may be a presumption that you intended to marry all along when you applied for entry. ...