Unfortunately, as the valkyrie conspirators weren't prepared for this, operation valkyrie concludes with its original purpose, keeping control of the government in the hands of the nazi party. That is, unless they were in on it...
This is actually untrue. The essential gears of the Valkyrie conspiracy were in place since the March 1943 attempts. And even if they weren't, the death of Hitler frees the Wehrmacht from any loyalty to the Nazi regime. In the threat of chaos from the sudden death of Hitler and pretty much all his top followers, the generals are going to seize power rather than acknowlege Himmler as leader, whom they hated and despised (and the generals have the upper hand in a fight for power, since they have Valkyrie ready, while the vast majority of the SS network is dispersed on the front) or a second-tier Nazi figure.
I make a strong case for my default "successful Valkyrie" scenario: separate peace negotiations with the Western Allies, leading to a Japan-like conditional in all but name surrender of Germany and its allies to the Anglo-Americans in exchange for national unity in their ethnic-linguistic borders and no Soviet occupation, after a mostly successful last stand of the Wehrmacht on the Eastern Front with everything it has left in Europe, and an Iron Curtain rather further east than OTL.
With a successful 20 July, I generally assume this to mean Germany in its pre-Munich borders minus East Prussia, an Iron Curtain on the Vistula and the Danube, with Grossdeutchsland, Czechia, West Poland, West Hungary, Slovenia, Croatia, maybe Slovakia, in the NATO/EU camp, even if Stalin would seek revenge from Sovietizing Finland.
However, this scenario makes a most crucial difference. Hitler dies before the start of Bagration. If the generals can organize a more successful defense against Bagration, the Red Army could be stopped, and the final Iron Curtain be drawn, on the 1941 borders at least, and a case could be made for the 1939 borders as well. Romania, Bulgaria, perhaps even Finland and the Baltic states could be saved from Communism, Poland and Hungary would be united, Hungary could have a chance to keep northern Transylvania and southern Slovakia, Poland could have a chance to keep its eastern territories, Germany could have a chance to keep East Prussia and perhaps even the Sudetenland. Sadly Romania would fail to keep Bessarabia in any case, since the Red Army had already occupied half of it at the PoD.
And most importantly, stopping the Holocaust in early June 1944 saves a great deal (although quite sadly, not most) of its victims. Score for mankind, and welcome to a stronger Israel. I can see the Sionists successfully claiming the West Bank in the War of Independence.
However, the South Koreans are going to pay the bill for keeping Eastern Europe free from Stalinist terror, as the USSR shall accelerate its timetable for invading Manchuria. Maybe Stalin could even manage to seize Hokkaido, but I do not trust the amphibious capabilities of the 1944 Red Army. He's going to keep North Iran as well (although this could easily butterfly Khomeini away).