Hi Jamie,
Thanks for reaching out to Microsoft Q&A.
Yes you would need to login into visual studio even if you use community edition. Since you have installed in a PC without internet you can try your luck if it asks you to login after trial period, I believe it would. See the below link...
https://learn.microsoft.com/en-us/visualstudio/ide/how-to-unlock-visual-studio?view=vs-2019
(or)
Go with visual studio code.
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