What shader are you trying to convert? Shader graph / node based third party shader plugin stuff, lines of code type shaders, or just look at the effect and think I want to redesign it in an unreal way.
I personally think what is more important here is your shader knowledge in general and what is available to you within shaders. If you understand what the shader you want to recreate does, either by reading nodes / code or by exploring the effect through estimated experiments, the conversion is not too difficult.
and the more you know, the easier it becomes what is possible and what is not, that this and that is used, this thing is the thing, but with a different name, etc.