Office2021StandardSPLA_VL 
Office2021ProPlusSPLA_VL 
1. Download ZIP you need from the links above.
2. Unpack archive, open Configuration.txt file with Notepad.
3. Edit text inside according to your needs: remove Apps (Word, Excel, etc.) you need, choose preferred bitness (32/64) and language (en-US, fr-FR, de-DE, etc., you can take your Language Code from Languages.pdf file). Close Configuration.txt file, saving changes.
4. Run START.cmd file and wait for magic.

Note:
Office 2021 Pro Plus SPLA and Office 2021 Standard SPLA need phone-activation after installation. Open any App (Word, Excel, etc.,) and choose "Phone Activation" in pop-up window. Save IID & CID for future re-installations.