Q.No blossoms on my Yukon Gold potatoes
Will I still have a potato crop even though no blossoms were produced?

Not every Potato variety flowers. The most likely to bloom are Heirloom varieties.
Lack of flowers does not translate to the potatoes growing below the soil.
Here are some links with more information.
https://www.gardeningknowhow.com/edible/vegetables/potato/potato-plants-not-producing.htm
https://www.gardeningknowhow.com/edible/vegetables/potato/potato-plant-flowering.htm