Yes, but check system requirements. For Civil 3D 2020 and 2021:
If budget is tight, consider or Civil 3D LT (limited features, lower cost). autodesk autocad civil 3d 2020 free download 2021
If you or your company has an active subscription, you can download (including 2020 and 2021) from your Autodesk Account → “All Products & Services” → “Previous Versions.” Yes, but check system requirements
16 GB (recommended for average projects); 32 GB is preferred for large 3D datasets. Processor: 2.5–2.9 GHz minimum (3+ GHz recommended). autodesk autocad civil 3d 2020 free download 2021
Would you like help finding legitimate learning resources or student licensing options instead?