Welcome to the Bunnings Workshop community. It's wonderful to have you join us, and thank you for sharing your question about what kind of plant do you have along your fence line.
That plant on your fence line is Star Jasmine. You can identify it by the way its flower petals come out in a radial style and how its leaves are satin shiny. Star jasmine is a fast-growing vine when planted in full sun. It will quickly climb up a fence or wired fence, making it a great choice for a privacy screen. Its stems anchor themselves to structures and move upward quickly. Encourage vines to climb up your fence by twirling the young vines around the wires.