How to calculate on ground aircraft yaw rate knowing the longitudinal speed and inferred yaw angle
Do I have enough information to calculate it?


No.

Yaw rate is $rad/s$. You have an angle, $rad$ (or degrees), and you have a linear speed, in $m/s$.

You cannot obtain a $rad/s$ value from these two data points.

You need the time interval over which the change in yaw has been observed.