I'm pretty sure general relativity has been scientifically verified at least once, probably more than that.

One experiment that I can think of which validated relativity is time dilation. Take two clocks, one at rest, and one moving at high velocity. The clock that was moving will experience less time passing than the clock at rest. This has been verified many times, and if it were not true it would disprove relativity. Also, modern technologies such as GPS rely on this being true to work.

I'm pretty sure general relativity has been scientifically verified at least once, probably more than that.

One experiment that I can think of which validated relativity is time dilation. Take two clocks, one at rest, and one moving at high velocity. The clock that was moving will experience less time passing than the clock at rest. This has been scientifically, verified many times, and if it were not true it would disprove relativity. Also, modern technologies such as GPS rely on this being true to work.