mine is MacBook Pro 13 inch - mid 2012 , is this software compatible with mine.

macOS Catalina is compatible with these computers

• MacBook Pro (Retina, 13-inch, Late 2012)
• MacBook Pro (13-inch, Mid 2012)

Reference: https://support.apple.com/en-us/HT210222

Make sure you have 30 to 40Gb free storage and 8GB RAM.

Yes, your MacBook Pro is compatible with Catalina which is required mid 2012 MacBook Pro or later.

https://support.apple.com/kb/SP803?viewlocale=en_US&locale=en_US