Given that you're connected to a server, Electrum will show you different derivations paths that has existing transactions,
It'll automatically iterate the account_index of common and non-standard derivation path if the previous one has at least one transaction. (ref: /electrum/bip39_wallet_formats.json)
If there's more than one, repeat the restore process with each.
As for the fiat value, just enable the correct 'Fiat Currency' in "Tools->Preferences->Fiat" and select a reliable price 'Source' API below it.