Stuck on loading either during installation or on software channel

After clicking on continue on updates and software page it just shows loading. 15 minutes later still nothing. What should i do?

Are you referring to the installation setup?

Or Software Channel (Labeled as “Software” in apps menu), maybe?

If it is the Software Channel, you might run in terminal

sudo apt update

Look for any 404 errors or fail to connect and remove any ppas that show that error.
Then open Software & Updates app and ensure that “Download from” is set to Main Server.
Log out, then in, then try running the Update page on the Software Channel again.