I've never talked to a woman who was a complete stranger about tickling.
To me it would seem absolutely wrong to do so.
The closest I've ever come, were incidents I've posted about on here through the years.
If I had a female pen pal, and got to know her for a while
Also, say a couple of times if I knew a woman at a place, and knew her for a long time. I would casually bring the subject up.
Such seemed a bit.. uncomfortable or not right enough.
Discussing tickling with a woman who was a complete stranger.
I absolutely would not do that for many reasons.
Among them being its not right.
The woman would think I was a creep.
Also the chance of a woman saying I was harassing/sexually harassing her.
Not right, and also not worth the risk of what might happen if I did.