What you can it depends on what the service is and when you get paid.
Immediate Payment: If you mow someone's yard, you would be paid right after unless you have some sort of contract or agreement for longer-term mowing with specific payment terms.
Billed payment or invoiced payment: For other services, you might bill or invoice someone with "30-day terms," for example. I order business cards and receive an invoice -- payment is due 30 days after the invoice date.
If you can give us more context, we could narrow things down.