Problem installing tidyverse - non zero exit status?

You are not showing the complete console output so I can't know if we are seen the actual root cause of your problem but from what I can see you are missing Xcode in your system (not in R) and the recommended development tools for macOS systems.

These tools are required to compile packages from source and since you are using a very old R version, you are forced to install packages this way.

Note: Please do not post screenshots, it is considered a bad practice here, post formatted code instead, here is how to do it