My MacBook is hanging from software update

Hello anniebnpar,

Welcome to the Apple Support Communities. It appears the Mac is not progressing based the 'Setting Up Your Mac' screen. I'll gladly help.

This resource explains what's going on and has steps that can help: If your Mac is stuck on the 'Setting Up Your Mac' screen

Best regards.

I had this with mine, had to force restart it - however the whole system felt sluggish and there were errors and issues in a lot of places.

I just completely erased my disk and went for a fresh install - works really well now.

IMHO Mojave to Catalina is by far my most painful experience for Mac updates.