1 WiFi networking device in your computer or laptop? 1 WiFi connection is possible, not 2 simultaneously.
However, if you mean that these 2 WiFi signals come from 2 different ISPs, then you better purchase a decent router device that can combine these two ISP signals into 1, the combined signal can then be used by the only WiFi network controller in your laptop. Or desktop.
In other words, if you have a need to bundle the signals from 2 (or more) ISPs you do not do this on your laptop or desktop, but in the routing device of your home/company network. The concept is called 'bundling' and requires you to read up on networking. You can do this with OPNSense, pfSense and other software-based firewallson a PC, which needs at least 3 network cards in it. One network card for one ISP, the second network card for the other ISP and one network card for your internal network.
If you go the PC route, you'll need network cards (Intel is the preferred brand here). That hardware isn't free, the OPNSense and pfSense software is, but you'll need time to set these up properly or pay someone to do that for you.
You can also get specific routers with this functionality already built-in. That is usually much more expensive, but easier to maintain.
