No. Fonts are not architecture-dependent. A standard .ttf works on both 32-bit and 64-bit Windows.
Zawgyi is a legacy Burmese font encoding system created in the early 2000s, long before full Unicode support for Myanmar script was widely available. Unlike standard Unicode fonts (such as Myanmar Text, Padauk, or Noto Sans Myanmar), Zawgyi uses a custom encoding scheme where characters and rendering rules are hard-coded into the font itself. zawgyi one font for windows 10 64 bit free download