[Ghost]

//	****** DATABASE NAME ******
	//	This is the name of the database where your vBulletin will be located.
	//	This must be created by your webhost.
$config['Database']['dbname'] = 'имя твоей бд';

	//	****** TABLE PREFIX ******
	//	Prefix that your vBulletin tables have in the database.
$config['Database']['tableprefix'] = '';

	//	****** TECHNICAL EMAIL ADDRESS ******
	//	If any database errors occur, they will be emailed to the address specified here.
	//	Leave this blank to not send any emails when there is a database error.
$config['Database']['technicalemail'] = 'dbmaster@example.com';

	//	****** FORCE EMPTY SQL MODE ******
	// New versions of MySQL (4.1+) have introduced some behaviors that are
	// incompatible with vBulletin. Setting this value to "true" disables those
	// behaviors. You only need to modify this value if vBulletin recommends it.
$config['Database']['force_sql_mode'] = false;

	//	****** MASTER DATABASE SERVER NAME AND PORT ******
	//	This is the hostname or IP address and port of the database server.
	//	If you are unsure of what to put here, leave the default values.
$config['MasterServer']['servername'] = 'localhost';
$config['MasterServer']['port'] = 3306;

	//	****** MASTER DATABASE USERNAME & PASSWORD ******
	//	This is the username and password you use to access MySQL.
	//	These must be obtained through your webhost.
$config['MasterServer']['username'] = 'имя юзера бд';
$config['MasterServer']['password'] = 'пароль';

Красным цветом выделил что ты должен там внести.