Install snapd on CentOS Stream
First you need to enable epel-release repository
# dnf -y install epel-release
You can check to ensure the epel repository is now enabled
# dnf repolist repo id repo name appstream CentOS Stream 8 - AppStream baseos CentOS Stream 8 - BaseOS epel Extra Packages for Enterprise Linux 8 - x86_64 epel-modular Extra Packages for Enterprise Linux Modular 8 - x86_64 epel-next Extra Packages for Enterprise Linux 8 - Next - x86_64 extras CentOS Stream 8 - Extras
# dnf -y install snapd