Q.olive tree doesn’t bare fruit
We have 2 olive trees, not sure what sort, but they are roughly 8 yrs old and we have never had fruit. Why?
It all depends on what cultivars you have. Many olive tree cultivars do not fruit until they are 5-12 years of age, however, there are some cultivars such as 'Arbequina' and 'Koroneiki' that fruit as young as 3 years old. And, most olive trees need a pollinator tree of a different cultivar (are both of your trees of different cultivars?). There are also non-fruiting cultivars of olive that never produce.
For more information on growing olive trees, please visit the following link:
https://www.gardeningknowhow.com/edible/fruits/olive/olive-tree-care-information.htm