How many monitors you can connect to your MacBook Pro depends on which model you have – or rather on which chip you have. If you have the 2020 M1-chipped MacBook Pro 13, you can only connect one external display, and even using a dock won't allow you to add more, so you might want to choose a wide screen if you need a lot of space.
However, the 2021 M1 Pro MacBook 14 and 16 can drive up to two external displays with its Thunderbolt 4 (USB-C) and HDMI ports, and the M1 Max chip can drive up to four. To check which chip you have, go to the Apple menu > About This Mac.