I think I have seen just as many fungal skin infections or even more than I have seen vaginal yeast infections in my life.
Your skin is the largest organ in your body, and you better believe it can get infected just like anything else.
Fungal skin infections are absolutely not uncommon. You must remember that yeast loves to grow in warm, dark moist places. Athlete's foot, jock itch, and thrush are all common because of that. This means you can easily develop a yeast infection on the skin near your genital areas, where your thighs rub when you exercise, under your breasts, or in the folds of your skin (especially if you are obese).
You can get nail fungus under your nails (very difficult to get rid of), and you can also get ringworm (which is common among certain athlete's).
The best thing to ensure you don't get skin fungal infections is to always wipe off sweat and try to stay as dry as possible at all time. Take hygiene and showers seriously, do not go several hours after the gym without taking a shower. If you do end up getting a fungal skin infection, topical antifungal creams do work very well for most of them.