Found solution
I downloaded the .jar file from:
https://mvnrepository.com/artifact/org.scala-lang/scala-compiler/2.11.1
to the .minecraft %appdata% filepath (type %appdata% in your file explorer address path)
Ex:
C:\Users\OurFamily\AppData\Roaming\.minecraft\libraries\org\scala-lang\scala-compiler\2.11.1
The I ran the forge install file and it worked