on *:text:*:#: {
;;;You use * instead of a word in the event part;;;
if ($strip($1) == !nickinfo) {
;;;So Now You Use an if.  $strip makes the script see the text even if the $nick ;;;;;;uses colours. So $1 returns the first word , im using $strip($1) .;;;;;
if ($nick isop $chan) {
if ($strip($2) == $null) {
;;;I guessed you wanted it to notice the selections if the rest was blank So I ;;;;;;;;;Added if ($strip($2) == $null) .  $null returns blank 
.notice $nick Type Your selections nick info - auto op - nick expire ...
}
if ($strip($2-) == nick info) {
.notice $nick get all info about nick (if registered) type /msg nickserv info
;; $2- returns word 2 and up ;;; $strip($2-) returns word 2 and up uncoloured
}
elseif ($strip($2-) == auto op) {
;;; use of elseif because previous if refers to $strip($2-) as well
.notice sets wether the given nickname will get auto op or not...
}
elseif ($strip($2-) == nick expire) {
.notice $nick sets wether the nick will expire....
}
}
;;closed the bracket opened at if ($nick isop $chan)  { 
;;;use of elseif here because we closed isop
elseif ($nick !isop $chan) {
.notice $nick Sorry ,only can be used by ops
}
}