Esim on ipad pro

Your iPad Pro 10.5 WiFi & Cellular supports both a physical SIM card and an embedded AppleSIM.

eSIM is not available to the iPad Pro 10.5.

Here is a the support page that shows AppleSIM and eSIM support for iPad and iPad Pro - such support being additional to a physical Cellular Carrier SIM:

iPad - Cellular - Apple

No, that option is only available for iPhones:

"iPhone XS, iPhone XS Max, iPhone XR, and later feature Dual SIM with a nano-SIM and an eSIM.1 An eSIM is a digital SIM that allows you to activate a cellular plan from your carrier without having to use a physical nano-SIM."

Is my ipad pro 10.5 capable of adding cellular data? I do not have a SIM tray