Yes, there are those 500 people who signed the Discovery Institute's vaguely worded petition. But that pales in comparison to the scientists that fully support evolution. Google "Project Steve" where about that same number of scientists named "Steve" or some variant signed a very specifically worded petition saying doubts about evolution were flat false. Since people named "Steve" represent about 1 percent of the population, and the two petitions have about the same number of signatories, that means that "scientists" that have some vague doubt about evolution represent about 1%.
If you think 1% is "many people", you have an odd way of thinking.
I laugh loudly at the people who claim evolution is truth because “X” amount of people believe in evolution. That means you. How many “scientists” believed the Earth was round when that theory came out.
OFF WITH YOUR HEAD!