how to build hise 3.03?
The version numbers are pretty meaningless. Just build the develop branch.
the steps in the github have been stripped to nothing
They've been simplified to 5 steps - https://github.com/christophhart/HISE#windows
there is nothing anymore only a video from 3 years ago
I made an updated video last year (although nothing has really changed)
https://www.youtube.com/watch?v=D3kthNOQ9_s
so what do i choose during install. which IPP,
You don't need IPP but if you are using it you install the OneAPI and if I remember correctly there is an option for OneAPI in Projucer (I explain it in the video I've included below)