The game Inter will play against Fiorentina is very important. It will be a difficult away game for Inter against Fiorentina. Juventus is leading by more than a match. Inter continues behind them. If Fiorentina beats them, the championship chances for Juventus will increase. It is much more important to win in such difficult matches.
Yep. The match against Fiorentina will be an important match. Inter Milan needs to beat Fiorentina to return to the top of Serie A standings. At least, Inter Milan should get a draw result on the match. They will have the same points (52) but Inter Milan has more goals than Juventus. So, Inter Milan will be back to the 1st place.
However, it mustn't be an easy match because the match will be held in Fiorentina home. Fiorentina will also play all out to get points because they want to secure their position in UCL zone. They only have 1 point difference with Atalanta in Europa League zone. If Fiorentina fails to get points, Atalanta has the chance to overtake them. So, it is not only about the chance to win Scuddetto for Inter Milan but it is also about how Fiorentina to keep their hope to end the season in UCL zone. This matter will make the match quite crucial for both teams.
This match is an equally important match for both of them so they will try their best to win. Juventus will wait for the results of Inter Milan's match in week 21 and Juventus is really looking forward to Inter Milan's defeat in this match because Juventus is in an unsafe position because Inter Milan can take over that position if they win the match or draw, but I think Inter Milan can definitely win it otherwise it's possible that the match will be a draw as you said because Inter Milan is playing away so it's quite tough.
Yes, Fiorentina gets a big advantage because they play at home, but Inter Milan also plays quite well even though they are playing away, so Inter Milan still has a chance to win if Fiorentina is careless and doesn't succeed in taking advantage of their home opportunities. The competition between Juventus and Inter is still quite interesting because of the difference both are still too small so both clubs still have a chance to fight for the league title.