Greetings from an Extension person who is dealing with the same issue on two peach trees in my own north-central Oregon orchard, darn it.  Bacterial canker or "gummosis" was my first thought, and this Ask Extension question on the same subject in 2021 gives a good answer: 

A: Growing apricots presents a unique challenge to gardeners. Native to the colder, higher elevations of China, the apricot has a low winter chilling requirement. In its native area, and other cold climates, it is required to go dormant, survive a cold winter and quickly wake up in the spring to bloom and set fruit before the following autumn.

In the Pacific Northwest and other areas with mild winters, the tree wakes up by February and starts to bloom. Then, in all but the most frost-protected areas, the blooms are zapped by frosts and the crop is lost. These trees are prone to fungus diseases as well.

Bacterial canker also becomes obvious in the spring. Sometimes limbs die back, but more often the first sign is amber-colored ooze on the trunk. There can be spots on the leaves and odd formations on young shoots. Called blasts, these formations encase the shoot in a clear ooze before it dies. There can be orange and red flecks on the tree outside the areas killed by the canker. The tree may try to survive by sprouting numerous suckers near ground level or from limbs before the parts of the tree that are affected by the disease. The organism that causes bacterial canker, Pseudomonas syringae, lives on the surface of the tree and is spread by splashing rain. It multiplies when the weather is warm and rainy in the spring. What kinds of stress will cause apricot trees to get bacterial canker? Spring frosts weaken apricot trees so they come down with it. – Chris Rusch, OSU Extension Master Gardener

Here are some other Extension writings/publications that give information and suggestions:

https://blogs.oregonstate.edu/mgmetro/2019/06/04/brown-rot-vs-bacterial-blight-canker/

https://extension.oregonstate.edu/gardening/berries-fruit/timing-key-treating-fruit-trees

https://extension.psu.edu/bacterial-canker-of-stone-fruit-in-the-home-fruit-planting

https://hortsense.cahnrs.wsu.edu/fact-sheet/apricot-bacterial-canker/

Good luck rescuing and healing your tree!  I need to work on my two peach trees.  Cindy Brown OSU Sherman County Extension, Moro OR