Late joiners are seriously SOL for scripts??? how does that makes sense?
You have to ask people who own Scripts to craft you items.
Once you reach the colony status you can use the machine (I don't remember its name) to queue items.
You can loot scripts near villages on the floor (little urns and pile of wood) or in dungeons, it helps a lot.
Scripts are avaliable in shops, I think the faster way to earn Scripts is to reach new villages and to buy scripts from vendors.