Now that is a mouthful! This is also one of those spelling errors that makes me want to scratch my eyes out every time I see it.
Two. It is a number. That is it. Nothing more, and nothing less. It is Two. Not one, or three.
Too means in addition to, or also. “We will go too.” “I want to see it too.” If more than one person is involved, you can likely use “too”, and not make me scratch my eyes out. Think many people. Or think just overwhelmed. Too tired, too stressed, too busy. It is too much.
To is nothing more than a preposition that sets up a sentence. It can be before a noun, or a verb. “I want to go to Chicago.” I want to dance.” “I want to not ever see the words to, too, and two misused in public.”