How do i...pass information from my main form UI to my class in a class library? "

Quote:

i expect "GetQuestionAsked" to now contain the same value as speech

i did a break point to check the value change but it still shows the value is null

If you have done this:

string speech = "WHAT IS UR NAME";
QuestionAsked question = new QuestionAsked();
question.GetQuestionAsked = (speech);

Then question.GetQuestionAsked will contain the same value as speech - but only for that one instance. If you create a different instance, it will not contain a value unless you execute similar code on that instance.

Think about cars for a moment - you are driving your car, and you put your mobile in the glove box. Then you buy a new car and drive off in that. Would you expect to find your mobile in the new car's glove box?
Of course not - you understand intuitively that the two vehicles are separate instances of the class "car", and that what you do to a specific instance doesn't affect any other.

It's the same with your QuestionAsked class - what you do to one instance does not affect any other (except with static data, and you'll probably meet that soon).

A (not static) Class is a blue-print, a plan, a schematic. An instance of a Class is an "object" that implements the plan. You manipulate/use instances of Classes by setting values of fields and Properties, calling/invoking Methods.

You get values/data into an instance of a Class by passing parameters in the constructor of the Class, setting values of fields and Properties, and calling methods, passing parameter values.

A static Class is both a schematic and the one-and--only instance of the Class.