is the war of gog and magog happening now? all the scary prophecies in the tanach: Have all of them already happened throughout history, or are there some that are about to happen?

Shalom, Thank you for your questions. It is hard to know exactly which prophy of the Tanach is being fulfilled at any particular stage of history. In general, different Rabbis have different perspectives. Some have said that during the Holocaust many of the “scary prophecies” were fulfilled. Most would believe that the present ingathering and re-establishment of the State of Israel is a fulfillment of the “good” prophecies. Beyond this it is hard to know with any sense of certainty. Blessings.