I am a Paid on Call Firefighter. Does this count as volunteer? Trying to figure out which credit i can use?

If you did volunteer work as well as paid work, you might be eligible for the Volunteer firefighters' amount. This CRA page has more info: https://www.canada.ca/en/revenue-agency/services/tax/individuals/topics/about-your-tax-return/tax-return/completing-a-tax-return/deductions-credits-expenses/line-31220-volunteer-firefighters-amount-line-31240-search-rescue-volunteers-amount.html