So for some reason, Presto Music thinks it's a great idea to have the year field look like: 2023-02-23\\1987. How do I just display the year as 1987? The rest can be deleted. I tried regular expressions to no avail.
It looks like a multi-value field - which you can check in the extended tags dialogue which should show 2 fields of the type YEAR, one with 2023-02-23 and one with 1987.
You can now either remove all duplicate fields
or merge the duplicate fields
or if you want to get rid specifically of the first piece of data then try an action of the type "Guess value"
Source string: $meta_sep(year,==)
Guessing format string: %dummy%==%year%