The highest price achieved by an asset since its inception is called the all-time high of the asset. All-time high price of an asset can also be seen as the highest price paid by a trader for the asset regardless of the quantity of the asset they bought.
The all-time high of the asset is its global high which denoted the potential of the asset in the long run. However, there is no guarantee that the asset shall be able to trade back to its all-time high if is currently seeing a downward trend. All-time high can be a good metric to look at the history of a particular asset. However, it should not be a metric to drive investments because it then becomes a vanity metric.