That's 0.00040000 BTC or 40,000 satoshi, not 40 satoshi.

What exactly did you do?
You have a BIP39 seed phrase and you tried to import that into electrum to make sure your wallet can be recovered. Am I right?

If so, you should create a new wallet and select "Standard wallet" and then "I already have a seed". Click on "Options" and check "BIP39 seed" and enter your seed phrase.
In the next step, you must specify the script type. Select "legacy", if your addresses start with 1, p2sh-segwit, if they start with 3 and native segwit, if they start with bc1.