I scored 104 marks in NATA 2019 and having 8.5 GPA in IPE. Can I get seat in Andhra University?

Yes, its a decent score. Here are list of colleges in which you can get admission on basis of your result.

Department of Architecture, IIT Roorkee
Department of Architecture, NIT Calicut
Faculty of Architecture, Manipal University
College Of Engineering
Chandigarh College OF Architecture
Dehradun Institute OF Technology
ies college OF Architecture
Sir JJ college of Architecture
Birla Institute of Technology (BIT)-Ranchi
College of Engineering (Anna University)-Guindy
Visvesvaraya National Institute of Technology
Rizvi College of Architecture
Department of Architecture, NIT Calicut
Department of Architecture, NIT Tiruchirapalli
Faculty of Architecture, Manipal University
Department of Architecture, BIT, Mersa
Narsee Monjee Institute of Management Studies
Bengal Engineering & Science University
College of Engineering (Anna University)-Guindy
R v School of Architecture, Bangalore
Chandigarh College of Architecture, Chandigarh
Sinhgad College of Architecture
IES college OF Architecture
Narsee Monjee Institute of Management Studies

Hope this helps you.