Normally, a new Facebook advertising account will start with a low spending limit (usually only a few dozen dollars). To get a limit of 250 USD immediately, you cannot create it directly but need to:
Use a reputable account (clean via, has a long history of operation).
Stable payment → standard tagging, no errors, no chargeback.
Run regularly, pay on time → after a few cycles, Facebook will automatically increase the spending limit to 250, 500, and then higher.
If you need it quickly, use a pre-trained account and increase the limit (the agency's service will provide this type).