try like this
View:
<form method="post" id="signin" action="@Url.Action("rating", "Rating")">
**YOUR CODE**
<input type="text" class="ratingEvent rating5" name="rating" value="rating" /> //Add name attribute
<input type="submit" />
</form>
Controller:
public ActionResult rating(FormCollection form)
{
int ratedvalue=form["rating"]
}