It should have had a pruning last winter. Your best bet is to search apricot tree pruning. You will have all the answers very quickly.

Summer pruning (August) is good for size control. Where do you live? that makes a difference. Apricot trees, unlike other deciduous fruit trees, should not be pruned when it might rain, so winter pruning is not advisable.

There is a lot of good information here: Backyard orchard

California home orchard

Note that summer pruning is recommended for apricots because of their tendency to get Eutypa fungus infections.

Igteacher is correct, you should prune in August.

As to pruning:

Take off anything that is dead;

Then remove the smaller branches in the middle, especially any that crossover another or rub;

What you want is a v shape with the middle almost bare;

It looks like you have some really long lower branches, you could take them back to just above an outward set of leaves.

What you need to do is step back after the basic pruning and look at the tree. You should be able to tell what looks out-of-place.

And, if you take any limbs back to the trunk remember to make your cut just out from the little collar where the limb meets the trunk.

Good luck!

Thank you everyone !!!