Q.cucumbers
a first time grower although I have tendrils growing where can I see the flowers grow on the plants

The male flowers open first and grow in clusters of three to five, while the female flowers grow on a single stem. When successfully pollinated, the female flowers develop fruit at the flower base and the male flower drop off the plant. Male flowers outnumber female flowers 10 to one. You should not be alarmed if a large number of flowers drop because these are the male flowers that have served their purpose.
https://www.gardeningknowhow.com/edible/vegetables/cucumber/tips-for-growing-cucumbers.htm