The solution needs to add or subtract workdays to a starting date. Similar to how Utility - Get Date and Time Difference handles exclusion of days.
An additional value add would be if both actions could handle public holidays
Excluding Weekends and Public Holidays - Power Platform Community (microsoft.com)
Thanks for the request, this has been planned and scheduled for completion by end of Q2 2024 (Jun 24)
This request has been completed - Utility - Get Date and Time Difference – Encodian Customer Help
There is a new 'Days to Exclude' property which allows dynamic exclusion of required days.
