I might have a Virus on my old Mac and I'm scared of bringing it into my new Mac. But I still want my pictures/music and documents in my new Mac do you have any solution would it spotted the virus and just bring every safe document?

A new computer will have the MacOS already installed, and with System Integrity Protection, the system directories are locked. With Catalina (if so equipped) the invariant part of the system is on a separate logical Volume that is Read Only.

What that means to you is that you can use Migration Assistant (or Setup Assistant on first run ONLY) to bring across your files with no fear of introducing old problems onto your new Mac.

Regardless of the source, nothing except pre-installed Apple software can get on the "OK to run" whitelist until you approve them, one at a time, by trying to run them and entering your Admin Password.

Your Mac could be paved with malware, but as long as they can't be run, there is nothing to fear. There is no need to be running a scanner non-stop looking for patterns. Use MalwareBytes once and then just be Vigilant when your Mac asks for authorization to run something.

I doubt very much you have a virus, maybe some malware download the free version here then run it https://www.malwarebytes.com/mac/

Your welcome 😄 Good Luck !

That was a very informative reply and very Helpful, have a great day ! 😄