Hello I just got started into this modpack called star technology and my gregtech large farm doesn’t seem to be working does anyone know how to fix?

You have a ULV Output Bus, right? It has only one output slot, so the multiblock can’t do any recipes that can output more than one item. Wheat outputs both wheat and seeds. If you want to do wheat you’ll have to upgrade to LV Input and Output busses. For now though you can do things like potatoes and carrots. Good luck with the rest of the pack.