Many composers in the 19th century - and even some later - relied on tempo designations and not specific metronome markings to indicate tempo. Some composers did indicate metronome markings in some of their works, but some these are thought, by modern interpreters, to be impractical or inappropriate on the modern piano and in a modern concert hall. Such indications may even be considered by some artists as too limiting to "artistic" interpretation.
Some editors will suggest metronome markings but keep in mind that those have not been dictated by the composer. An Urtext edition will sometimes be a reliable source for a precise tempo if the composer wrote it and will be assumed, if it's a good, reliable edition, to have been given by the composer. Can one be sure? It can be a mine-field with no hard and fast answers.
Further complications to this dilemma - if it is a dilemma - is that recordings by composers of their own works don't always observe the tempi printed in their scores.
You will find, if you listen to professional recordings by well-known and highly-respected artists that the performance tempo of a work may vary considerably from one performer to another. If such is not a help to you, then you simply have to use your own judgment about what you consider appropriate.
I have several reliable editions of various works by Liszt and no specific metronome markings are given in any. Nor have I read anywhere where Liszt mentioned specific tempi for any given work(s).
Last edited by BruceD; 01/24/21 12:16 AM.