2021 Frontier SV CC 4x4; 2018 Frontier SV KC 4x2
Not “how much weight”, more “how often” will you need to tow it. Unless you’re dragging it around everywhere you go or taking 1,000 mile road trips every other Monday, you should be fine. Properly equipped, your truck is capable of towing that rig the distances you want to go. Don’t stress over it so much before you’ve even tried it.