Not really. Bep sometimes assigns a label for first issues, but getting hints via the forum what issue would be a good one to work on won’t bring much. Something helpful is always trying to re-create issues that people with less “programmers mind” create. The issue needs to be understood to be solved.
Other than that: How about contributing to the documentation instead?
The main Hugo repository isn’t the best place to start I guess, as the issues are numerous and the few devs too busy.
What about starting to contribute to a theme?
What do you want to see improved / what would you like to work on?
Example / shameless plug: I was missing a tool to find the right Hugo theme, with the right features.
I’ve scaffolded jamstack.club, learned a lot on the way, and hopefully provided something useful to the community (I’m now ready to welcome new contributors BTW )