Looks like it might be okay, once it hasnt burnt through the track itself (the tracks are the green lines on the pcb).
A track basically is a line of copper underneath the green (silkscreen) part of the pcb, that carries the current.
Once you havent broken the track it should be fine.
Use the continuity function on your multimeter, to test between the solder point near the blob, and the next solder point on the track.
If the track is okay, your multimeter should beep if it has the beep function.
Touch the two probes together first to see if it has a beeper.
If it doesnt have a beeper, then the resistance value should drop to 0 eventually, (it might stay at 1 for a while).