https://wordpress.org/plugins/developers/add/
https://developer.wordpress.org/plugins/wordpress-org/plugin-assets/

banner-772x250.png
icon-256x256.png

screenshot-1.png  👉 900x500
screenshot-2.png  👉 900x500

For windows, I recommended TortoiseSVN 👉 https://tortoisesvn.net/
For Mac, 👉 https://openhub.net/p/scplugin



