How do I get a tax break from my fiance child.they both lived with me all year,with no help from the dad.after I filled everything out everything it's not giving me break

You don't get any breaks for the child or fiancé, because neither are blood related to you.

Dang that's sux,,even though I supported them all year... all about the blood!! Lol ok thanks a lot !!

For the 2018 return ... the new rules means the best you can get is up to a $500 per person NON refundable credit off your federal taxes if you claim them as an other dependent.