To get the Worldserver functional:

1) AC Data v16 enUS
https://mega.nz/file/VEJyTLYR#2yi_hqBQ2qJTDuXUUWFMG-cMLVlxQjEDha39v0RDOjk

2) Server With Individual Progression
https://mega.nz/file/hA4xTK5b#SAnNcOERC-qp1DRv5day1IElEoTYh1-wict2G5kxhE8

3) Update (seems like this one broke the server
https://mega.nz/file/5QgjjLQQ#52dDm4EpU3u6Z99-3B9VDtJ_3_q32Snzh4NRupt_E3c

- Unpack AC Data v16 enUS - should result with 'data' directory only.
- Unpack 2) Server With Individual Progression, rename it to Azerothcore (for simplicity)

- Move 'data' into Azerothcore root (i.e. Azerothcore/data)

DO NOT INSTALL THE UPDATE!

Run

MySQL.bat
authserver.exe
worldserver.exe

Then modify your realmlist.wtf in your client's WTF directory -
SET realmList "127.0.0.1"
and
Edit (or create) realmlist.wtf and add
set realmlist 127.0.0.1