We have some experts in HVAC here who can chime in with their recommendations and advice.
In the meantime I will only add that there's a label on it with Microfarad ratings which should be duplicated on the new one so it matches up properly.
Best if you can take it with you when you buy the replacement or keep it next to you as a reference when ordering a new one online.
More here:
Buying a New HVAC Capacitor