How Big Are Cucumbers When They Start ‘Giving Fruit’?
Mine, besides the seed leaves, has 2 true leaves with another one growing.
Certified GKH Gardening Expert
Cucumber plants do not produce fruit until at least a month to month and a half into their growing cycle. Yours are still too young.
These articles will help: https://www.gardeningknowhow.com/edible/vegetables/cucumber/tips-for-growing-cucumbers.htm