You can use the VideoExport plugin. First, check if you have it installed: press F1 and search for the name. If it is there, note the shortcut.
If you do not have it installed, there is a plugin copy included with your installation - is in the Sideloader's optional mods. Grab it from there, then F1, then shortcut to bring up the plugin menu.
Uuunnless you already use this plugin, and are searching for yet something better. Welp, there is a destop capture, such as OBS. But eventually you will run into Studio Neo studders where due to light change the scene freezes and skips frames. OBS can't handle these, but VideoExport handles event the most reflection intensive multi-chara scenes mostly smoothly capturing the render flow.
I.e. here is an example of what OBS was chocking on, yet VideoExport handled like a pro:
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