Regarding COVID-19, there has been no restrictions in place in Denmark since March 2022. There are also no requirements regarding vaccination or testing for people traveling to Denmark.

Over the summer break, plenty of large events have been taken place in Denmark, which has led to a minimal increase in the number of infections. Still, this was expected and is not considered as worrisome. The Danish authorities are closely monitoring the situation on an on-going basis. Exact numbers on daily infected are published in English by the Danish Health Authority on this website:
https://www.sst.dk/en/english/corona-eng/status-of-the-epidemic/covid-19-updates-statistics-and-charts

Also, you can find a good overview on the number of infected in Denmark via this link:
https://ourworldindata.org/covid-cases