I currently have this in this part of Inno script
[Run]
Filename: {app}\\bin\\vcredist_x86.exe; Parameters: \"/q:a /c:\"\"VCREDI~3.EXE /q:a /c:\"\"\"\"msiexe
Follow this link https://www.codeproject.com/Articles/20868/NET-Framework-Installer-for-InnoSetup. Its for both NET framework and VC distributables.You can find out if there is a distributable, say 2013, is installed in a pc or not. If not installed, it will install it for you. I HIGHLY RECOMMEND this.