I had the same issue. Contacted Yahoo Customer Care and finally got a response yesterday. Was able to get my scores and print them. Hope this helps.
Thank you for being a Yahoo user. We appreciate you choosing to use Yahoo and truly hope you continue to use Yahoo.
My name is Jordan from the Fantasy Sports team. Thanks for your patience as our team worked hard to get you access to your Yahoo Golf Handicap Tracker post closure of Yahoo Fantasy Golf. Please follow the steps below to access your Yahoo Golf Handicap Tracker:
1. Log in to Yahoo! using the Yahoo! ID used to stored Yahoo Golf Handicap Tracker information.
2. After login, use this URL: https://golf.sports.yahoo.com/tracker/download
3. This will download a CSV containing your scores. You can open it in a text editor, or try to load it in Excel or Google Sheets to see a slightly cleaner output.
4. This CSV should contain up to 1000 of their scores, along with courses and dates. This does not include hole-by-hole data.
If the download URL gives you an error, make sure that you're logged in with the correct Yahoo ID.
Thanks for reaching out and hope this clarifies any concerns with accessing your Yahoo Golf Handicap Tracker.
Yahoo Fantasy Sports Customer Care
I began using a Yahoo application called “Golf Handicap Tracker” in 1995.
I had over 22 years of my golf scores stored in the programs data files.
Three weeks ago, the application and my data were no longer available.
There was NO warning beforehand or even after the fact.
Is there any way I can get MY DATA from Yahoo ?