Hi, @Jim Willison
Do you mean you want to use Microsoft Teams Free to dial regular mobile or landline phone numbers, similar to how you used Skype?
If so, Teams Free does not currently offer new paid calling plans for regular phone numbers. However, if you previously used Skype and still have active or inactive Skype Credit, you can use the "Skype Dial Pad" inside Teams Free.
Update Teams to the latest version, sign in using the same Microsoft account you used for Skype, then select "Settings and more" > "Skype Dial Pad". If Skype Credit is associated with that account, you should be able to enter a phone number and make the call.
Microsoft explains this here: Make a call with Skype Dial Pad in Microsoft Teams
If you do not have existing Skype Credit, the Skype Dial Pad normally will not appear, and Microsoft no longer sells new Skype Credit or Skype calling subscriptions.
Do you still have Skype Credit on the Microsoft account you used with Skype?
Click "Add comment" to let me know.
Thanks!