Below is a script that I had used to find the version of Micrsoft’s Dot Net Framework software. Sometimes you may not find the install version in control panel and you do have other ways to find it through reg or the properties of a DLL file. Why not do everything through Powershell though

Get-ChildItem 'HKLM:\SOFTWARE\Microsoft\NET Framework Setup\NDP' -recurse |
Get-ItemProperty -name Version,Release -EA 0 |
Where { $_.PSChildName -match '^(?!S)\p{L}'} |
Select PSChildName, Version, Release

With the script above… You can copy and paste that into a non-administrative Powershell ISE window. As shown below you will see what the script looks like pasted, ran, and what the output should look like

After running the above script and confirming it works for your use. You can then save as and save it under your script collection to run when needed. In my particular case I run this through SCCM on demand when I need to know what the .NET version is for the CAS, DP, MP, CMG, ETC especially when more requirements come out for newer versions.