Google’s Martin Splitt said on Twitter that Google does not associate nofollow links with your website. They can, however, use nofollow links for discovery.
Let's be careful here: We do respect nofollow – we don't associate the link with your site.— Martin Splitt at 🏡🇨🇭 (@g33konaut) February 7, 2020
However, we may still use the link for discovery.
That's an important nuance here…
How to check your links
Use the Link Profiler tool in SEOprofiler to analyze the links that point to your website. The Link Profiler tool enables you to filter the links by follow/nofollow and by many other signals: