<a href="https://toxaura.com/new-york/faces-by-marina-np/" title="Faces by Marina, NP — Botox injections in New York"><img src="https://toxaura.com/new-york/faces-by-marina-np/badge.svg" alt="Faces by Marina, NP — Botox injections in New York" width="300" height="84"></a>

Paste it into your website — most site builders (Wix, Squarespace, WordPress) have an "embed code" or "custom HTML" block. The footer is a good spot.