Q.How To propagate hellebores
Someone told me you can grow cuttings. Is this true?

While I have seen a couple of references on the internet to growing hellebore from cuttings, experts and universities mention only growing them from seed, or from dividing the clumps and planting the rhizomes. This article will tell you more: https://www.gardeningknowhow.com/ornamental/flowers/hellebore/growing-hellebores.htm
Also, this article contains some interesting information: http://pss.uvm.edu/ppp/articles/hellebore.html