'Project does not support framework '.NETFramework,Version=v4.5' when creating a new visual basic project.

[gorkoda1]

This makes it impossible to build something as basic as the default hello world project. It is worth mentioning that this issue doesn't arise when creating a C# project. output of sudo dnf install 'mono-*'

Package mono-addins-1.1-13.fc32.x86_64 is already installed.
Package mono-addins-devel-1.1-13.fc32.x86_64 is already installed.
Package mono-antlr4-runtime-4.8-1.fc32.noarch is already installed.
Package mono-basic-4.7-5.fc32.x86_64 is already installed.
Package mono-basic-devel-4.7-5.fc32.x86_64 is already installed.
Package mono-bouncycastle-1.8.5-5.fc32.x86_64 is already installed.
Package mono-cecil-0.10.4-2.fc32.x86_64 is already installed.
Package mono-cecil-devel-0.10.4-2.fc32.x86_64 is already installed.
Package mono-cecil-flowanalysis-0.1-0.36.20110512svn100264.fc32.x86_64 is already installed.
Package mono-cecil-flowanalysis-devel-0.1-0.36.20110512svn100264.fc32.x86_64 is already installed.
Package mono-complete-6.6.0-8.fc32.x86_64 is already installed.
Package mono-core-6.6.0-8.fc32.x86_64 is already installed.
Package mono-data-6.6.0-8.fc32.x86_64 is already installed.
Package mono-data-oracle-6.6.0-8.fc32.x86_64 is already installed.
Package mono-data-sqlite-6.6.0-8.fc32.x86_64 is already installed.
Package mono-devel-6.6.0-8.fc32.x86_64 is already installed.
Package mono-extras-6.6.0-8.fc32.x86_64 is already installed.
Package mono-icon-theme-1:15.08.3-10.fc32.noarch is already installed.
Package mono-locale-extras-6.6.0-8.fc32.x86_64 is already installed.
Package mono-mvc-6.6.0-8.fc32.x86_64 is already installed.
Package mono-mvc-devel-6.6.0-8.fc32.x86_64 is already installed.
Package mono-reactive-6.6.0-8.fc32.x86_64 is already installed.
Package mono-reactive-devel-6.6.0-8.fc32.x86_64 is already installed.
Package mono-reactive-winforms-6.6.0-8.fc32.x86_64 is already installed.
Package mono-reflection-0.1-0.21.20110613git304d1d.fc32.x86_64 is already installed.
Package mono-reflection-devel-0.1-0.21.20110613git304d1d.fc32.x86_64 is already installed.
Package mono-tools-4.2-17.fc32.x86_64 is already installed.
Package mono-tools-devel-4.2-17.fc32.x86_64 is already installed.
Package mono-tools-gendarme-4.2-17.fc32.x86_64 is already installed.
Package mono-tools-monodoc-4.2-17.fc32.x86_64 is already installed.
Package mono-wcf-6.6.0-8.fc32.x86_64 is already installed.
Package mono-web-6.6.0-8.fc32.x86_64 is already installed.
Package mono-web-devel-6.6.0-8.fc32.x86_64 is already installed.
Package mono-winforms-6.6.0-8.fc32.x86_64 is already installed.
Package mono-winfx-6.6.0-8.fc32.x86_64 is already installed.
Package mono-yui-1.1.2-21.fc32.x86_64 is already installed.
Package mono-zeroconf-0.9.0-29.fc32.x86_64 is already installed.
Package mono-zeroconf-devel-0.9.0-29.fc32.x86_64 is already installed.

[lextm]

You might upgrade to Mono 6.1x release to see if such has been fixed. But in general VB.NET on Mono is quite limited, and issues in that area are not prioritized to be fixed quickly. (Similarly, VB.NET on .NET Core is also not well maintained.)