Once you have downloaded your .ttf or .otf file from a legitimate source:

⚠ Downloading “free” versions from unauthorized font aggregators often violates copyright law and may introduce malware.

Century Gothic is proprietary; however, you can access it through the following: Century Gothic license - Adobe Community

When you use a heavy geometric font like Century Gothic Bold, remember these three rules:

A: Using the desktop font for the web requires a separate Webfont license, which can be expensive. Use a Google Font alternative instead.

If you do not have the font pre-installed or need a specific commercial license, use these authorized sources: