So .. The only wat to exchange my bitcoin into dollars is through escrow ?
and if coinbase doen't work in Egypt .. How I made a Wallet ? * it is the only site that I know who make wallets *
You need to read on a lot buddy about Bitcoins in general and mainly Wallets, the online wallets are not safe and they're particularly not safe for holding large sum of Bitcoins. Use this link to get educated about wallets -> https://bitcoin.org/en/choose-your-wallet, and read the warning at the bottom of that page. I would advise a desktop wallet but that is only safe if your computer is clean.
Another online wallet which is not listed on the above site is blockchain.info/wallet but again it's better if you keep your coins in a cold storage wallet, especially since you're wanting to invest a lot of money into it. https://en.bitcoin.it/wiki/Cold_storage