How to Connect Shure SM7B to MacBook via Focusrite Scarlett Solo
No, not cleanly. The SM7B needs about 59 dB at speaking level and the Scarlett Solo (Gen 3) stops at 56. Those are the published figures. Published specs.
The Shure SM7B runs out of preamp on the Focusrite Scarlett Solo (Gen 3). Stay as close as you like and the take is still about 3 dB quieter than a comfortable tracking level.
Shure rates the SM7B at -59.0 dBV/Pa, the voltage from a loud 94 dB tone at the grille. A speaking voice is closer to 85 dB, so the preamp still has to find about 59 dB to land near −9 dBV. That −9 dBV figure is just a tracking level: high enough to use, with space before the converter clips.
Put a booster of about 20 to 25 dB on the mic cable, before the interface — a Cloudlifter or FetHead, or anything whose manual prints the decibels. Speak a hand's width from the grille. Gain you add later in the DAW turns the preamp noise up together with the voice, so it does not fill this gap.