how can I get access to ftp of my wordpress which is generated by one-click function.?
If you created it as a Simple one-click, you can't get to it via FTP (or any other method). Only the Custom one-click installations offer file access to the user.
hi thanks, should I must make my domain name as a fully hosting?
yes the domain must be 'fully hosted' for a 'custom' one click install.