Kevin Costner (“Yellowstone”), Harrison Ford (“1923”), Helen Mirren (“1923”) and Sylvester Stallone (“Tulsa King”) are all believed to be receiving handsome paychecks.In the case of “1923” and “Tulsa King,” of course, it’s part of Paramount Global’s investment in turning Paramount+ into a must-have streaming brand. The other recent streamer upstart, Peacock, is shelling out decent-sized salaries (although perhaps not quite like those) for stars like Pete Davidson and Natasha Lyonne.“They’re launching a network, so they have to,” a rep says.