Now how many satoshi is good for fast send transaction ? , i use electrum with automatic fee .
It depends on the network conditions at the time. Sometimes you can get away with less than 10 sat/byte at other times you may need well over 300 sat/byte to get in the next few blocks. These websites will help you determine what fee to use before sending a transaction.
http://bitcoinfees.21.co/https://core.jochen-hoenicke.de/queue/#2dI'd suggest you'll save a lot in the long run if you don't use automatic fee and also use replaceable fees so if things suddenly change after you send it you can go back and try again with a higher fee.