How do I stream from my iPad to my LG OLED 4K HDR 55B6P TV?

Pretty sure you can stream it through the LG TV plus app if the set itself doesn't do airplay.

If that doesn't work try the allcast app.

I found the Apple - Lightning Digital A/V Adapter can be used to connect my iPad to my LG OLED TV. 

Another option is the Apple TV. The iPad connects to the Apple TV and it to the LG TV.

My research continues. Thanks.

Problem solved.  I purchased the Apple Lightning Digital AV (HDMI) Adapter and one HDMI cable. Thanks.

I connected my Apple iPad to my LG OLED TV using the Apple Lightning Digital AV (HDMI) Adapter and one HDMI cable. It worked perfectly.

I changed the input on my LG TV to HDMI 4 (TV input connection #) and started a movie I wanted to watch on https://tubitv.com on my Apple iPad. I had to hit the start button on the iPad to start the movie and used the volume control on my TiVo Box remote to adjust the volume. There were no issues and the movie played perfectly.

The TV audio output cable is connected (DH Labs Glass Master Toslink Cable) to my Bricasti M3 DAC and the DAC is connected (balanced interconnect XLR cables) to my Ayre AX-7e integrated amplifier.

All movies streamed from https://tubitv.com are free and some ads were displayed during the movie but they were usually very short.

Great app! I have used TubiTV. It lets you stream movies and TV shows for free. But it has an alternative called Cinema HD. Cinema HD is also a great app for watching movies and TV shows for free in high quality.

Download and Install Cinema HD app to watch free movies and TV shows. This app is a good alternative to TubiTV.