i have a movie clip of an object moving horizontally and when it get to X it
goes back to the start. how can i make it so when i click it it will create the
clip twice at the start? i can do all the positioning and stuff im not sure how
to make multiple instances of it though.

im not very good at this, what do have to assign? do you mean like this
yourMC.duplicateMovieClip("clipname", "clip", "1")??

you can repeatedly use duplicateMovieClip() to make more than one copy. for
example:

dep=1;
yourMC.onPress=function(){
rclip=this.duplicateMovieClip("yourMC"+dep,dep);
dep++;
rclip._x=22;
rclip.onEnterFrame=function(){
this._x+=3;
if(this._x>400){
this._x=22;
}
}
}

i had to change it slightly because it didnt work, but how i did it sort of
does... it plays the clip but if i click the object to start it again it just
sends the clip back to the start of its loop?!? it wont seem to increment i
tried dep++ and dep += 1 (lol)