Hey @Emily Welcome to the forums.
A) Your ENG tokens will be worthless.
B) We are not listed for now. There are active communication with Exchanges, but the process is slow. Why is there a silence about exchange?
C) No exchanges for now, but Binance is a participant in the Testnet.
D) Yes SCRT is Mainnet. SCRT is a coin on the Secret Network.
E) Yes SWAP is open until End of Year.
Hope it helps.
If you are looking for swap material :
Check out Youtube Tutorials