Backdoor Roth question

I'm gearing up to do my first backdoor Roth IRA conversion and I'm wanting to make sure I do it right.

I have both a traditional IRA (what I have been contributing to throughout the year) and a Roth IRA set up in Fidelity. By the final pay period of the year, I will have contributed $7000 to the traditional IRA. I've had this money in SPAXX and it has grown ~$100 over the course of the year.

Would I convert the entirety of the tradIRA to Roth or just $7000? My understanding is that a tax form is generated and I'd have to pay taxes on the gains the tradIRA had over the year, which is why I kept it in SPAXX but it grew nonetheless. And is the tax form autogenerated and delivered to me at some point?

Appreciate any input y'all may have!