You can safely run the latest version of Chrome on macOS 10.15.7, but it is highly recommended to plan an update to a newer macOS version (like Big Sur or Monterey) eventually to ensure you continue receiving browser security patches in the coming years.
Using Chrome on your Mac 10.15.7 offers several benefits: Download Chrome For Mac 10.15.7
Older versions of Chrome may eventually lose the ability to sync with your Google Account or may show warnings about being out of date. You can safely run the latest version of Chrome on macOS 10