I have installed Z-wave JS UI and got contact with aeotec z-stik 7 USB and also added my Qubino energy meter. I can see values live but I cannot find out how to add the integration because I get error to connect to ws://?:3000
You don’t say how or where you installed Z-wave-JS UI, but unless you installed it on a completely different machine than Home Assistant you shouldn’t need to use the IP address as you have indicated in your post.
If you installed it as an add-on you should use the hostname shown in the documentation ws://a0d7b954-zwavejs2mqtt:3000 as that is the docker host name alias configured in Home Assistant during the add-on install.
If you did by chance install it somewhere else with the IP you listed, then you likely have a firewall or communications problem between Home Assistant and the host in question.