@ysmina-- The boils are probably not from the fever but from an infection which is also the cause of fever. When bacteria reach the skin and the oil glands in it, they cause infection which can result in boils.
You're doing the right thing by leaving them alone. It can be very dangerous to pop boils or even pimples on the face, especially when it's located in the upper half of the face. Popping them can cause bacteria to enter the bloodstream and infect other parts of the body.
There are also a lot of nerves that go through the face to the brain. Damage to the nerves from popping boils can lead to complications in the brain.