It's not something you could possibly answer; if everything's good the font should include a license file, containing information about how you can distrubute it.
If there are no license files in the font package; don't use it. Often it's a illegal copy of some other font. Listen to what i say; 'often'.
Do a search on Google before you ask where to get this free fonts. Most of the time, the top results will display legit websites. 'Most of the time'; remember. Always check if there's a license file.
Sometimes the license is included in the website. Make sure to check that one.
