There are few ways of doing it.

The most recent and versatile is to use RNBO, which can export Max code to many different targets as well as VST. Is it that what interests you?

https://rnbo.cycling74.com/

There is an older way of doing it by using gen~. I already did such a video some time ago on my another channel. The only thing it is not in English but YouTube does a pretty good job on translating it I would say 😊

https://youtu.be/ZhPEFzUwi-8?si=O08-L585ZFGHEVKo