Custom Enchantment

I want to make a Datapack wich adds 2 enchantments. One to amplify bow damage and one for sword damage. Asking gpt gave me 2 options A: create a custom effect, B: create a scoreboard to store and manage data.


I want to use option B. 


    

  1. How do a make a scoreboard and read/write to it using datapacks?
    

    2. 

  2. How do I add a custom enchantment?
    

    3. 

  3. How do I amplify the damage?
    

    4. 

  4. Can I add that enchantment without commands using books to an item later?
    

    5.
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