This is my preset for scream vocals, using my #1 go-to plugin: Waves SSL Channel. I use this as a quick and dirty preset during tracking and adjust it to suit the mix.
Since it’s common for a screamer to be recording right up on the mic, it’s necessary to cut out some low end buildup. The fast compression combined with the 8k boost puts the vocal right up front. I like how it sounds with around 10db gain reduction with the compressor placed after the EQ (CH OUT button). Try it out and share your results!