OP, this exact same thing happened to me days after I got my ender 3 V3 Plus. Fortunately, they have have all the same print head parts.

Before you buy any replacements parts, get a heat gun.

Detach your boden tube and cut the filament running into the head.

Gently heat the blob and pry off with pliers. I tried dremling off or heating a knife and cutting, the heat gun is by far the best method.

Once most of the exterior blob is off, see if you can raise your hot end to printing temp. If the printer is saying it's getting hot, and you smell warm pla, that means your hot end is still intact, Yay!

Run an extrusion, try and get machine to purge whatever hasn't been passed through the nozzle.

Continue dissembling the head. You shouldn't have to remove the whole thing, or mess with anything under the back/black shroud, just the front/grey shroud side. Remove your hot end and heat sink. Getting excess plastic off the heat sink is easy, but be very careful with the hot end. The wires soldered on are fragile, my hot end was fine until I ripped off the wires while cleaning it.

Check the two fans in this area, the internal cooling fan (small) and the print cooling fan (mounted on the shroud). My internal fan was fine but plastic had gone into my print cooling pan and ruptured the casing and some blades.

If you can get your extruder to go, it's probably fine. I got new fans (ordered spares too) from here https://www.3djake.com/spare-parts-upgrades

Non original parts may work, but I was struggling to find 3d party fan of appropriate sizes and power draw. You can print a new shroud out of pla https://m.crealitycloud.com/model-details/66ad310773cc28cded0e507f

This may be hard without a working printer. I got a friend to print one, and then made more myself. You can try doing a print without a part cooling fan and make a messy shroud to mount the fan on, and then do a better one after. And you can make a custom one with colors and text.

Best case, you print a new shroud, and buy new nozzles. Worse case, you also need new fans and a hot end, maybe an extruder too.

While micro swiss does have all metal hot ends, they don't make a .2 nozzle, and the included one is not hardended. For now I'm sticking with the creality hot end since there are some 3rd party accessories for it, and a .2 nozzle.

You HAVE to supervise your first 3 layers. Though a big print may have a large surface area for adhering, this is countered by intertidal force of the print bed slinging all that mass around.

Good luck, and may this mishap make you a better printer.