Dr. Browns book is FULL of the evidences. If you cannot read, you need to go back to school.
Mr. Brown's book doesn't actually contain any evidence that there was a flood. My challenge to you would be to lay out where it says that there was a global flood in this particular period in history, deduced from this evidence and contradicted by no other evidence. You won't be able to do that.
What he actually does is
assert there was a global flood, without evidence for the event itself. Then he tells you, contrary to Widmanstatten pattern evidence, that comets leapt off the surface of the earth, with no supporting evidence that happened either. Then he tells you when the flood must have happened because of a time when the two comets were last near the sun at the same time.
It's a bit like me saying that I leapt over a tall building in a single bound last week, but it can't have been on the Monday, Tuesday, Wednesday or Friday because I was working those days, so it must have been the Thursday I did it because it was a public holiday. Would you accept that logic as evidence I did actually leap over a building? Because that is the logic you are accepting from Mr. Brown.
In his case it is particularly hypocritical because he uses calculations based on genealogy of absurdly long-lived characters in a religious book to confirm his comet calculations, but then as I understand it refuses to talk about religion when he invites people to 'debate' his ideas.
There is no debate. Mr. Brown is fraudulent, and that's the opinion of most other creationist organisations. I'd say most proper scientists working in geology, astronomy and paleontology have probably never even heard of him. That's because he is not a serious person in science, his whole mission is to generate the alt-facts for religious fundamentalists, and of course they are not facts in any meaningful sense. You can tell by his enthusiasm to 'debate': that kind of debate is for entertainment, it is not a process real scientists use to work out what is really going on.
Stuart