How to report taxes if I wasn’t given a 1099?

As a new seller I’m still finding so many things that I need to learn about. Currently, its about how to do my taxes.

I’m filing a CA tax but my business is in “WY”. I didn’t meet the thresholds for a 1099 and very confused on how to proceed with filing my taxes via turbotax. Do I just report general income and general expenses? Am I supposed to put a zero for sales tax if Amazon supposedly pays it for me?

Also, after downloading the sales tax calculation report, the “Total Tax Collected by Amazon” column all shows 0 which I’m guessing means sales tax may not have been collected on my behalf? But when I look at transaction details I clearly see Marketplace Witheld Tax line items.

If anyone can help shed some light on this or direct me to some resources to look into that would be very much appreciated.

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