Right now, if you want to receive over keysend, just go to Settings - Node info and copy your nodeID. Go to other node and use that nodeID to send to.
I proposed to Zeus devs to add a nice button in the "receive" screen for the keysend too.

GitHub
Add button "Receive via Keysend" · Issue #2169 · ZeusLN/zeus
Describe your enhancement idea We need to have a quick access to the keysend feature not only for sending but also for receiving. I suggest to add ...