Both men and women often say they find intelligence appealing. That's really an overstatement. When most people (not all) say they want an intelligent mate, they really tend to mean a date who is 'not dumb.' That is, 'smart enough.'
Most people are intelligent enough for most people. Brains in itself isn't as much of a sexual turn-on as some suggest.
And woman that have Ph.D.s or doctrates in any other field find it very difficult to marry. Why? Because women are looking for men who are smarter than them (as well as taller, and richer).
I place intelligence on a list of priorities I look for in a woman at about number three.
1) Physically attractive enough to attract me
2) Kind and respectful and knows how to create relationships
and 3) Is smart enough not to be a "blonde" or use her intelligence to compete with mine.
If a woman uses her intelligence to further her relationship with her man, her children, and her community then by all means let her be an Einstein!
But, women, whatever you do, don't use your intelligence to compete with a man. It just intimidates them and drives them away.