There may or may not be sync issues with that setup, so all you can do is try a test shoot. However you mention the camera is USB so can we assume you're filming yourself with a webcam setup? If so then you definitely may find they don't sync perfectly; I have a client who record selfies with Quicktime Player using a USB cam and a Scarlett analog to digital audio box and it's always 4 frames out of sync.
Not to worry though! There are a few ways around this:
If you're recording the audio and video separately, then you can just marry the two files together in Premiere and adjust sync to your liking. Note that I would definitely record audio with the camera too (scratch audio) as that will make aligning the good audio a lot easier. You can put all the elements on a timeline, select all, right-click and choose "Synchronize" to align the audio, then delete the camera audio and link or group the good audio to the video clip. Or use multicam sync if you have a lot of clips to synchronize in your bins.
If audio and video are being married together when you record then you may have to SLIP the audio into sync. Add a clip to the timeline, then option-click on the audio and use the slip tool to manually adjust sync in either direction until you achieve sync. This way is a bit more tedious but if you don't ahve a lot of clips it won't take that lomng. the good news is the offset should be consistent so you'll always be slipping by the same amount each time.
yes ill be using a webcam but i really dont want to use its microphone because of the lack of professional sound. This would be for voice overs, character animation, illustration work, etc. not to mention a vlog. I really need the audio to be top notch and i have the equipment in place to do that.
I guess ill have to time it and see how many frames out of sync it always is, and make that adjustment by either atting a delay start of using the blank space at the start of the video file in the timeline.