There is more than one way to do it:
Using the package manager:
sudo apt install perl
Installing from source:
wget http://www.cpan.org/src/5.0/perl-version.tar.gz
tar -xzf perl-version.tar.gz
cd perl-version
./Configure -de
make
make test
make install
Installing in your $home directory (not sudo needed) with Perlbrew:
wget -O - https://install.perlbrew.pl | bash
See also Perlbrew