This is the official Samsung Galaxy S20+ 5G User Manual in English and Arabic provided from the manufacture.
English
Spanish
The Android 10 Manual can be used for Samsung Galaxy S20+ 5G with the following model numbers, SM-G980F, SM-G980F/DS, SM-G981B, SM-G981/DS, SM-G985F, SM-G985F/DS, SM-G986B, SM-G986B/DS, SM-G988B, and SM-G988B/DS.
Samsung will publish the Samsung Galaxy S20+ 5G User Guide in other languages too.