Push saute button on Instant Pot. Allow pot to become hot then add ground beef. Brown for about 3 minutes. Add chopped onion and celery and saute additional 2 minutes. Drain off any excess fat.
Press cancel on Instant Pot. Add in rest of ingredients besides corn and stir.
Close lid and seal valve. Choose soup/stew and adjust time to 20 minutes.
When time is up you can quick release remaining pressure. Open pot and hit saute and stir in thawed corn and stir. Saute for about 2 minutes then press cancel.