This depends on the tree.
Pears & apples respond well to pruning. Most of our fruit trees are pre-pruned before they're delivered out to you. In case your tree isn't pruned, you can prune it towards an outward facing bud, reducing the branch length by about a half.
It’s important to remember that stone fruits, like peaches & cherries, are different than apples & pears, and should only be pruned in the spring or summer and only during dry weather, to reduce the risk of infection from silverleaf (a fungal disease) or bacterial canker.
Most hedging like hornbeam also responds well to pruning and we would encourage you to prune your trees after planting.