How to Show Cost / Budget on Gantt Chart

Hello - I used a simple project plan template and the Gantt chart is not showing anything. I would like for it to show at least the budget / cost, and if possible, I would also like it to show the Task. How can I do that? When I create a new sheet (without selecting a template, the Gantt chart shows the Task (or whatever is in the first column), but I would rather not have to copy over all 250 lines into a new sheet.