Descriotion
This datapack (with default settings) sets the initial size of the barrier to 500 blocks in each direction, after which it adds 25 blocks every 3 hours
In order for the datapack to work, you need to upload it to the world/server and input the command:
/function minecraft:border/border_create
Information on how you can change the parameters of changing the barrier can be found on the Wiki
You can find the source code on my GitHub or you can join my Discord
