Hello Naij,
**"Bread" is a collective noun , it has no singular ,you can't say "a bread , 2 breads, another bread ..etc". Therefore ,you rather say :
" Would you like some bread?"
If you want to use "another" or a definitive article "a" you say" :
"Would you like another loaf of bread?"
** You could say both "look well" or "look good" ,but then they have different meanings:
- to look well:
to be in good health , to look healthy or fit, to be fine and alright.
- to look good:
to look admirable, pleasing to the eye, handsome, beautiful or attractive.