Q.Is This A Mango Tree?
If it is how much longer will it take to get fruit? I don’t know how old it is. I’ve trimmed it back a few times.

Certified GKH Gardening Expert
It does look like a mango. If it was grown from seed it could take at least six years. If it is from nursery-grown stock, which are typically grafted, it should bear in three to five years. It could be a sunlight issue. Here is more:
https://www.gardeningknowhow.com/edible/fruits/mango/mango-tree-not-producing.htm
https://gardeningsolutions.ifas.ufl.edu/mastergardener/outreach/plant_id/fruits_nuts/mango.htm
https://www.gardeningknowhow.com/edible/fruits/mango/growing-mango-trees.htm