My bee sting from a honey bee is itchy and swollen? what would be signs of infection?

Pus/abscess: If see pus or absces formation then the bee sting site is getting infected. You may need antibiotics.

Early redness ;: Swelling may be a normal reaction to a bee sting. However if the area continues to swell, has red streaks, pustulent drainage, becomes more tender ; painful rather than less tender and painful - then it may be infected and would require evaluation.