Good morning!
Its very high level of IgE.
It also may be due to food allergies.
For better results your son's complete case history is needed to evaluate the case like his age/lifestyle/stress factors/more physical symptoms etc.
All this is mandatory to cure the cause of disease so that the permanent improvement will be there if we eradicate the cause.
Next Steps
Kindly take online consultation through practo app for further assistance/queries.
If full allergy panel is not yet done then also go for this test (FULL ALLERGY PANEL).
Health Tips
Do exercise regularly. It will help to reduce these levels.
As you said that he has asthma also,then try to give him warm water to drink.
Try to use mask outdoors.
Keep him away from dust, smoke & excess of heat.