Just wanted to know which software is recommended to model Unity Assets
+1 for Blender if you’re not already wedded to another package. You can technically model in other things like Sketchup, but Blender has all the other things you need like UVW mapping, animation, rigging etc. Well worth your learning.
You can get student versions of the other “big name” products like Max and Maya, but they are limited to noncommercial use unless you pay $thousands. Blender is free for any purpose forever.