macOS catalina for Macbook pro

Check compatibility for install of the newest macOS or maybe slightly older;

since older Mac may not work with Catalina; perhaps Mojave or High Sierra.

• How to upgrade to macOS Catalina - Apple Support

https://support.apple.com/en-us/HT201475

To find your macOS version, Mac model, memory, and storage space,

choose About This Mac from the Apple menu . If your Mac isn't

compatible with macOS Catalina, the installer will let you know. 

View the complete list of compatible computers.

If your older Mac isn't compatible with Catalina, you might be able to

install an earlier macOS, such as Mojave, High Sierra, Sierra, or El Capitan.

Good luck & happy trails!🌞