[bigfatkitten]

Word has had mail merge for about 40 years. Why not use the native feature instead?

https://support.microsoft.com/en-au/office/use-mail-merge-fo...

[gus_massa]

Not the OP, but IIRC Google Docs has no support for this feature.

[bigfatkitten]

You can do it with Apps Script, but yes there's no click-a-button feature like Word has.