Welcome to the Bunnings Workshop community @valka. It's wonderful to have you join us, and many thanks for your question about cutting Villaboard.
We don't have a Villaboard cutting service in-store. You can cut Villaboard yourself with a James Hardie Villaboard Knife Score and Snap. If you ask the team in-store, they might have a spare score and snap knife you could borrow to cut the board down for transportation home.