I'm still trying to collect payment for labor from 2019. Project Manager refusing to pay, today's date make a year

If you filed a claim of lien, you will need to take action within one year of the date that you filed the lien.

If you didn't file a claim of lien, then you should threaten and then take legal action, either by retaining counsel to file a Complaint, or by pursuing a claim in Magistrate (Small Claims) court.