Metroid 2 has a very simple text system. Each character is one byte, and you are limited to 16 characters per item and 6 for the save message (you can go above 6, but it will overlap the “Press Start” text). The format is listed here:

C0-D9 = letters, in order 
DA = .
DB = , 
DC = ' 
DD = - 
DE = 3 dots, 1/2 (for the save text)
DF = 3 dots, 2/2
FF = Space

00-BF and F0-FE are assorted graphics and empty space. You'll find the text between 0x05911 and 0x05A10 in Bank 1:

    0x05911-0x05920 - " SAVE...         " or D2 C0 D5 C4 DE DF FF FF FF FF FF FF FF FF FF FF
    
                                             S  A  V  E   ...                               
    
    0x05921-0x05930 - "     PLASMA BEAM" or FF FF FF FF CF CB C0 D2 CC C0 FF C1 C4 C0 CC FF
    
                                                        P  L  A  S  M  A     B  E  A  M  
    
    0x05931-0x05940 - "      ICE BEAM  " or FF FF FF FF FF C8 C2 C4 FF C1 C4 C0 CC FF FF FF
    
                                                           I  C  E     B  E  A  M   
    
    0x05941-0x05950 - "     WAVE BEAM  " or FF FF FF FF D6 C0 D5 C4 FF C1 C4 C0 CC FF FF FF
    
                                                        W  A  V  E     B  E  A  M
    
    0x05951-0x05960 - "      SPAZER    " or FF FF FF FF FF D2 CF C0 D9 C4 D1 FF FF FF FF FF
    
                                                           S  P  A  Z  E  R 
    
    0x05961-0x05970 - "        BOMB    " or FF FF FF FF FF FF FF C1 CE CC C1 FF FF FF FF FF
    
                                                                 B  O  M  B     
     
    0x05971-0x05980 - "    SCREW ATTACK" or FF FF FF D2 C2 D1 C4 D6 FF C0 D3 D3 C0 C2 CA FF
    
                                                     S  C  R  E  W     A  T  T  A  C  K 
    
    0x05981-0x05990 - "      VARIA     " or FF FF FF FF FF D5 C0 D1 C8 C0 FF FF FF FF FF FF
    
                                                           V  A  R  I  A   
    
    0x05991-0x059A0 - " HIGH JUMP BOOTS" or C7 C8 C6 C7 FF C9 D4 CC CF FF C1 CE CE D3 D2 FF
    
                                            H  I  G  H     J  U  M  P     B  O  O  T  S
    
    0x059A1-0x059B0 - "     SPACE JUMP " or FF FF FF FF D2 CF C0 C2 C4 FF C9 D4 CC CF FF FF
    
                                                        S  P  A  C  E     J  U  M  P   
    
    0x059B1-0x059C0 - "    SPIDER BALL " or FF FF FF D2 CF C8 C3 C4 D1 FF C1 C0 CB CB FF FF
    
                                                     S  P  I  D  E  R     B  A  L  L  
    
    0x059C1-0x059D0 - "   SPRING BALL  " or FF FF D2 CF D1 C8 CD C6 FF C1 C0 CB CB FF FF FF
    
                                                  S  P  R  I  N  G     B  A  L  L  
    
    0x059D1-0x059E0 - "    ENERGY TANK " or FF FF FF C4 CD C4 D1 C6 D8 FF D3 C0 CD CA FF FF
    
                                                     E  N  E  R  G  Y     T  A  N  K
    
    0x059E1-0x059F0 - "    MISSILE TANK" or FF FF FF CC C8 D2 D2 C8 CB C4 FF D3 C0 CD CA FF
    
                                                     M  I  S  S  I  L  E     T  A  N  K 
    
    0x059F1-0x05A00 - "       ENERGY   " or FF FF FF FF FF FF C4 CD C4 D1 C6 D8 FF FF FF FF
    
                                                              E  N  E  R  G  Y
    
    0x05A01-0x05A10 - "      MISSILES  " or FF FF FF FF FF CC C8 D2 D2 C8 CB C4 D2 FF FF FA
    
                                                           M  I  S  S  I  L  E  S