Macbook Pro reboots at start-up. Will boot using Safemode

You've had a kernel panic. If the computer boots into safe mode, then it's likely there is a third-party software causing the problem. Because you migrated your old system there may be 32-bit software installed that will not work in Catalina.

Dealing with Kernel Panics

Disconnect any third-party peripherals including any USB hubs. Use safe mode to isolate issues with your Mac - Apple Support then boot the computer into Safe Mode: How to use safe mode on your Mac, Use safe mode to isolate issues with your Mac - Apple Support and Playing Safe- what does Safe mode do? See Diagnosing problems- crash, freeze, panic, or spinning beach ball?, Don’t Panic! Understanding & Troubleshooting Kernel Panics in macOS, How to fix kernel panics after installing OS X updates | MacIssues, and If your Mac restarted because of a problem - Apple Support.

Kernel panics are indicative of possible hardware failure, so you should Check your Mac with hardware diagnostics or AHT. Kernel panic logs are found in: /Library/Logs/DiagnosticReports/ folder.

If you have no success figuring what is happening then you may need to examine the software you have running when the panics occur. Be sure it’s all current. If you must to resolve the problem erase the disk and reinstall macOS. Follow this outline to reset the computer to the factory-new state: Factory reset of your Mac - Apple Support.

Boot Into Safe Mode

1. If your Mac isn’t already shut down, then shut it down and wait at least 30 seconds before rebooting.
2. Immediately, at or before the chime, press and hold down the SHIFT key. 
3. Release the key after the Apple logo and progress bar appear.
4. Safe mode startup is much slower than normal startup, so be patient.
5. When the Login Screen appears enter your admin password. If you use automatic login, then this means you are in safe mode.

This is a new computer which could be defective. But you cannot return it until the stores re-open. So, I can only suggest your do the following which will require an active and reasonably fast Internet connection.

Internet/Network Recovery of El Capitan or Later on a Clean Disk

     If possible back up your files before proceeding.

1. Restart the computer. Immediately, at or before the chime, hold down the (Command-Option-R) keys until a globe appears.
2. The Utility Menu will appear in from 5-20 minutes. Be patient.
3. Select Disk Utility and click on the Continue button.
4. When Disk Utility loads select the target drive (out-dented entry w/type and size) from the side list.
5. Click on the Erase button in Disk Utility's toolbar. A panel will drop down.
6. Set the partition scheme to GUID.
7. Set the Format type to APFS (SSDs, only if installing Mojave or Catalina ) or Mac OS Extended, (Journaled.)
8. Click on the Apply button, then click on the Done button when it activates.
9. Quit Disk Utility and return to the Utility Menu.
10. Select Install OS X and click on the Continue button.

This erases and installs a fresh copy of macOS. Be sure to check it out thoroughly before restoring any files or apps. All applications must be 64-bit, only, because Catalina will only run 64-bit apps. If you have third-party software to install, then be sure to upgrade to the latest, compliant version. See App Compatibility Table - RoaringApps. It's good practice, given your recent problem, to install one app at a time and testing it before installing another app.

What error did you get when you tried to remove it from the list? The easiest way to start dealing with this is to boot into Safe Mode:

Boot Into Safe Mode

1. If your Mac isn’t already shut down, then shut it down and wait at least 30 seconds before rebooting.
2. Immediately, at or before the chime, press and hold down the SHIFT key. 
3. Release the key after the Apple logo and progress bar appear.
4. Safe mode startup is much slower than normal startup, so be patient.
5. When the Login Screen appears enter your admin password. If you use automatic login, then this means you are in safe mode.

From there you can start looking. If you are running Catalina, then you want to look for all 32-bit software that may be installed. Use Go64 to do this. Read the articles about what is different in safe mode from normal mode. You may be looking for third-party software that starts when the computer is booting. You may find the items that do that are located in /Library/LaunchAgents/ or /Library/LaunchDaemons and /Home/Library/LaunchAgents.

Note that whatever you find and remove may not fix the problem until you restart the computer normally.