Travel and mileage reimbursement is at the discretion of the brand and Agency who assigns you. If they offer reimbursement, it will typically be noted in the description for the gig. Always check with your hiring manager first before confirming yourself on a gig if you require any reimbursements.
Reimbursement for expenses, travel, and training vary gig to gig. Some gigs provide reimbursement for all three, some for a few, and some none at all. Your Agency contact will let you know whether or not this gig is providing reimbursement.
There is an “Expenses” question at the end of the field report with the opportunity to upload photos of your receipts as well as a total amount to be reimbursed. In order to receive reimbursement, you MUST write in the total amount of all receipts you are submitting for that gig and include a clear photo of the itemized receipt(s).