Is there a Presentation Mode for mobile?

Hi @colbycannon welcome to the community.
If you open a board in the mobile app, then hit the 3-dot menu in the top right corner, you should then see Send to Interactive Display. That will, effectively, allow you to present on the go.

If you’re talking more about the Presentation mode that is within the Miro board itself, then the answer is that it’s not currently available. If you would like it to be considered in the future, then please feel free to add it to the Miro Wishlist.