Now that we have the final number of qualifiers for each nation, I'll update my predictions.
"Safe" medals
Artistic gymnastics: 1 medal
Athletics: 1 medal
Boxing: 1 medal
Judo: 1 medal
Sailing: 1 medal
Skateboarding: 3 medals
Sprint canoeing: 2 medals
Surfing: 2 medals
Volleyball and Beach volleyball: 2 medals
Likely, but definitely not easy:
Football: 1 medal
Taekwondo: 1 medal
Swimming and Open water swimming: 2 medals
Unlikely, but feasible medals
Cycling: 1 medal
Fencing: 1 medal
Slalom canoeing: 1 medal
Tennis: 1 medal
Nearly impossible medals
Archery: 1 medal
Table tennis: 1 medal
Wrestling: 1 medal
I'd say 15 medals is a realistic expectation. Some sports in the "safe medal" tier can earn more medals, like artistic gymnastics and judo, and even football can give us 2 medals, so 15 is a somewhat conservative but realistic number.
Our unofficial goal is reaching 20 medals, but for this to happen we'll need excellent performances in judo, artistic gymnastics and volleyball, and we'll need at least 2 medals in athletics and swimming. It's within reach, but I honestly don't expect this to happen anymore.