Transfer from Binance to Binance.us HELP please

I am new to this, which will soon be obvious. I purchased BNB and nothing showed up in my Wallet. For some reason it when through Moonpay. When I go to my wallet on Binance.us , there is nothing in it. Although, my purchase shows in my bsc wallet via chrome app. Now I think what may have happened is it went to Binance.com. Not sure how to tell other than, when I go to the overview, it says Official Site https://binance.com/ Does this mean it is actually at Binance instead of Binance.us? If so, can I go to my bsc wallet and send to my exchange wallet that is in my Binance.us account - getting the address and memo from there? So confusing! I hope this makes sense. Thank you!!!!!!