Welcome to the forum.
Double click on VIN to get to it's Properties and assign it to the 5V net. There'll be a netlist from which to select it.
Occasionally you get footprints that you have to do this with.
Thank you for answering. Should i do that in pcb or schematics?
Best in schematics and then update changes to the PCB.
In pcb design i am able to click pins but there is no such a thing as a 5v net. I am assuming i should do that setting on schematics. Also assuming that i should have use net labels? I just make the connections never thing about power line etc. What is correct way to do that ?
Assign a unique Net Label to each of your power rails then ensure the IC pin it supplies is assigned to that net.
Right or double clicking on pins or devices allow you to reassign pins to their correct nets.
this is how auto-route works out :
Auto-route is very useful to help with component placement and that's about all until you go to some lengths setting defaults to have it laying out as well as you can do it. For final trace layout don't use it.