🚀 go-pugleaf

Thiyagu, 

      Font Management in the sense organize, activate & deactivate the fonts
      in efficient way without duplicates & corruption.




Just install and use a good font manager, such as FontAgent Pro (if you're on a Mac) or Suitcase. Create sets of fonts for your various needs and activate/deactivate those sets or individual fonts as needed. A good font manager can also find duplicate and corrupted fonts. 

      If corruption or some problem occurs then how we can find out causes and
      remedies for it.




If fonts become corrupted, you simply replace them with fresh copies. In a properly set up system using well-engineered fonts from reputable foundries, you should rarely have fonts that don't perform properly. 

      Also suggest me Font Management in Publishing...




If you mean which fonts can be accessed across a network (assuming your font licenses allow for multiple workstation installation), you can install fonts centrally and use a server version of font management software. 

      WYSIWYG, simply how the screen fonts get viewed and how fonts can be printed
      as Postscript outlines without problems.




Not sure what you're asking for here. Be aware that font technology has been migrating strongly over to OpenType. For example, Adobe has not produced PostScript (Type 1) fonts for about ten years. Why is PostScript (Type 1) so important here? Also, you don't address TrueType fonts.

Neil