A lot of people have noticed apt fails to install wine32 on Ubuntu 20.04. There is a lot of workarounds on internet involving adding third-party repositories, but it's also possible with just the official repositories.
sudo dpkg --add-architecture i386
sudo apt-get update
sudo apt-get install -y --allow-downgrades wine32 libpcre2-8-0=10.34-7 libpcre2-8-0:i386=10.34-7 libodbc1=2.3.6-0.1build1 libodbc1:i386=2.3.6-0.1build1
Allowing apt to downgrade packages makes sure it can match the package versions of amd64 and i386 architectures even if some packages were installed already.