Yes. Quite a lot. A small number at the end of the second world war. Regular use of machine-gun armed jets during the Korean War. The Vietnam war saw jet fighters armed primarily with missiles engaging each other (195 kills claimed by the US). Various conflicts in the middle east including the The Six Day War, the Yom Kippur War, the Iran-Iraq war (around 100 kills claimed by Iran) and The Gulf War (44 claimed kills by the US). And many more conflicts as well. The most recent US air to air kill was in 2017. An F-18 shot down a Syrian SU-22. Russia also claims some air to air kills in Ukraine. Jets have gone toe to toe with each other since the moment they were first introduced continuously until the present day. The total number of air engagements is somewhere on the order of magnitude of 1,000, and a fair bit less if you are only considering fighter aircraft