Now we need the datasheet.
You can’t use a module like this without manufacture's data.
I see Vin at the top tight, and ground ar bottom right.
That’s only half the question.., what are the I/O voltages and states for all the other points ?
Vcc on the chip itself is either 3V3 or 1V8
5 or 12V will smoke it if there’s no on-module regulator.
If it was an Arduino shield footprint, there’s a good chance it’s 5V compatible - but it’s not.an Arduino noard pinout.
Also remember the SIM76xx requires Vcc at up to 10W maximum when connecting and transmitting,