first, do you receive any incoming calls and regular SMS (P2P) from friends? If so, it is good, at least the porting was completed successfully
For 2FA text or other system generated text (A2P), it is normal for them to start coming later. Systems take longer to find out you changed provider and to route the text correctly to the new provider (Public Mobile). Also, banks put this delay on purpose too to avoid SIM Fraud
Usually they will start coming around the 3rd day but it could take as many as 7 days for all the 2FA/A2P text to come.