What is the Comparative of fore?

"Fore" is an adverb meaning "ahead in time or position." It doesn't have a comparative form because it doesn't describe something that can be compared in terms of degree.

If you want to express the idea of something being *further* ahead in time or position, you would use "further" or "more ahead."

For example:

* Instead of: "He arrived fore than expected."

* You would say: "He arrived further ahead of schedule than expected." or "He arrived more ahead of schedule than expected."