As a post exposure prophylaxis
If you haven't taken any dose previously then you should take 5 dose of rabies infection at
0,3,7,14 ,28 with Rabies Immunoglobulin 1 dose.
Actually in the your case it's cat bite so most doctor said take only 3 dose but according to rule 5 dose is necessary if not taken previously.
Next Steps
Keep record of vaccination.