Dogecoin and USDT on Metamask?

Hi all.

i’m new on Metamask so i’m not familiar with it yet. So i need your help.
Here is the context:
i have USDT on a dex called Stormgain (It’s a platform to trade crypto, such as
i have DOGECOIN bought from Kraken.
I’ve installed Metamask: my Metamask has been setup to be connected to Ethereum blockchain or Binance Smart Blockchain.

My 1st question is: Is it possible and how can i send my USDT from Stormgain to Metamask please ? must i send the USDT to the Ethereum blockchain or to the BSC ?

My 2nd question is the same but for DOGECOIN.

Thanks for your help !