Best Practices: Compiling for iOS

Still working on my first project, I'm close to MVP being ready for submission. Everything works/runs as intended across all devices. However, when building/archiving my product in Xcode, I get upwards of 50-60 warnings - not errors, but warnings - and I'm curious if the expectation should be that I clear out these warnings before submitting my Unity-based app to Apple's app store.

From deprecated functions to - well, actually it's mostly deprecated functions. Should I manually go in and update those? (Mind you, there'll be a learning curve to learn enough about iOS development separate from Unity, but I'm willing to put in the work.)

Thoughts? Feelings? Ice Cream Flavours?

Cheers!