Whenever I import a PNG 32bit file into photoshop, then try to use text on it. The text size reverts to --21474836.,( all the time. I tried resetting my preferences but it keeps happening whenever I import this PNG file
Import the PNG and save it immediately as a PSD. Now, once you've done that, try to add a new type layer. What point size do you have? If it's defaulting to 21474836 then open the flyout menu from the Character panel and click Reset Character. That should handle all possible cases.