Definitely the crab congee from Wong Kun Sio Kun, and the wantan noodles from Wong Chi Kei, but we only scratched the surface where dining in Macau is concerned during our one-week holiday there last month (we spent more time at the museums and historic sites) - I think you’ll be able to find a whole host of good eats there.
Check out the Macao Govt. Tourism Office website:
https://www.macaotourism.gov.mo/en/dining
