Insync installation on opensuse

Insync is for google drive, and their instructions is to add a repo with the content:

[insync]
name=insync repo
baseurl=http://yum.insynchq.com/fedora/$releasever/
gpgcheck=1
gpgkey=https://d2t3ff60b2tol4.cloudfront.net/repomd.xml.key
enabled=1
repo_gpgcheck=1
metadata_expire=120m

When I use yast-repo adding the url http://yum.insynchq.com/fedora/$releasever/ it always shows “permission denied”?

Shouldn’t $releasever be replaced with the actual version?

And what is yast-repo? A command?