Depends on the country. In Germany, it's a federal country much like the USA, and such decisions are made at the state level. So there is not uniformity. But

Depends on the country. In Germany, it's a federal country much like the USA, and such decisions are made at the state level. So there is not uniformity. But some policies, like masks in stores, are not as controversial as in the USA and so are pretty universally imposed. Other countries have centralized national governments with full jurisdiction over public health and the capability of imposing a uniform policy nationwide. Some indeed have uniform policies. Others have policies that vary by region depending on the infection rate, etc. (You see the same thing within US, or German, states.)